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People have recognized the value of chalk and carbonate minerals since ancient civilizations painted, tilled fields, and prepared medicinal powders from calcium-rich rocks. Chemists unlocked methods to produce purified light calcium carbonate during the 19th century. They moved from rudimentary grinding of limestone to wet chemical reactions, refining purity and reducing contamination. The drive to improve whiteness and uniformity directly supported papermaking, rubber, paints, and even early pharmaceuticals. Factories in Europe, the U.S., and later Asia scaled up output. Light calcium carbonate, distinct from the heavier ground powders, grew in importance with tighter standards for whiteness, particle size, and reactivity. The story runs parallel to the history of modern manufacturing, where cleaner processes and repeatable quality turned a basic mineral into a linchpin for everyday products.
Light calcium carbonate takes the form of a soft, powdery mineral, manufactured by precipitation from natural limestone or as a byproduct of chemical reactions involving calcium salts. Compared to ground versions, it feels lighter, tends to float or disperse faster in water, and often exhibits a high level of brightness. This gives it an edge in paints, plastics, papers, and food, where clarity and purity matter. The industry relies on its compatibility with a wide range of additives, enhancing color, texture, thickness, or processing. Factories keep close watch on purity, color, and impurity levels; even trace contamination can knock a batch out of spec, proving just how demanding industries using this mineral have become.
Inexperienced eyes may mistake light calcium carbonate for flour—it flows almost as easily. It's white, nearly odorless, with a specific gravity around 2.71, and a melting point above 800°C. Solubility remains low in water, yet it reacts easily with acids, fizzing up as carbon dioxide escapes. Particle size and surface area drive its value; smaller granules bring greater reactivity and smoother finishes in end products. Chemically, it's almost pure CaCO₃, but trace elements influence color and performance. Its crystalline nature, typically in the form of calcite or aragonite, shapes how it scatters light and binds with carrier materials in various industrial processes.
Manufacturers rarely risk skimping on technical sheets, because clients scrutinize every spec. Purity typically pushes past 98 percent CaCO₃, and iron or heavy metal content faces strict limits. Moisture content falls below 0.5 percent, regretfully not because products sit in warehouses forever, but so that cakes or paint formulations don't flop. Labels detail particle size distribution, with median diameters often below 2 micrometers for high-end products. Color standards follow the L-value scale, often reaching above 95 to satisfy those demanding picturesque whites. Food and pharma grades bear additional certifications—confirming microbial absence and low lead, arsenic, or similar nasties. Batch numbers, manufacturing dates, and shelf lives ensure traceability and accountability.
Producers favor a wet process for light calcium carbonate: they start with purified limestone or quicklime, dissolve it in water with carbon dioxide bubbling through. Precipitation leaves behind fine, soft particles, filtered and washed to scrub out any soluble byproducts. The process controls temperature, flow rates, and pH so tightly that a hiccup can throw off multiple hours of production. Sometimes surface treatments with fatty acids or silanes prepare the powder for tougher jobs, letting it settle more smoothly into plastics or rubbers. The insistence on a closed, clean process pays off in both product reliability and environmental safety, with efforts made to recover or neutralize process waters and emissions.
Light calcium carbonate stands out for how it dissolves in strong acids, producing carbon dioxide as it goes—hence the classic fizz in chemistry classrooms. It interacts with polymers, pigments, and stabilizers, making it almost like a Swiss Army knife in the world of additives. Factories can modify the surface, tweaking hydrophobicity or dispersion by adding stearic acid or silane coupling agents. In plastics, these tailored surfaces reduce clumping, help molding, and keep the flow smooth. Another area receiving attention is particle size tuning: finer powders fit specialty applications like dental pastes, while coarser forms work in building materials. Every modification aims to solve a very specific problem in product performance, from cost savings to improved texture or shelf life.
Light calcium carbonate occupies a space filled with names that sometimes confuse buyers: precipitated calcium carbonate (PCC), whiting, activated chalk, and purified chalk are among the regulars. In technical bids, you’ll spot “precipitated chalk” or “activated calcium carbonate.” Pharmaceutical circles prefer “Calcii carbonas praecipitatus.” Paint and plastics suppliers stick to “light calcium carbonate” or shorthand codes to specify grade, from PCC-1 to PCC-5. Brand and regional names pop up—coastal Asia’s biggest producers each put their stamp on bulk packs, and labeling for food and medical use always highlights the “precipitated” qualifier to avoid mix-ups with heavier, ground materials.
Safety concerns often center not on calcium carbonate’s chemistry, but on inhaled dust and contamination. Workers need dust masks and strong ventilation to avoid respiratory or eye irritation. Factories follow occupational exposure limits—often set at 10 mg/m³ for total dust, with some agencies pushing for lower. OSHA, NIOSH, and the European Chemicals Agency demand regular checks and training. Food and pharmaceuticals grades meet GMP standards. Plant managers devote hours to preventive maintenance and air quality monitoring so a single slip doesn’t cascade into a product recall or workplace accident. Disposal and spill guidelines exist, but since the mineral is biodegradable and non-toxic in reasonable quantities, handling mostly boils down to dust management and keeping product lines free from cross-contamination.
Industries absorb light calcium carbonate in ways that surprise those who don’t see behind the scenes. Papermakers value it for brightness, opacity, and a texture that supports high-speed printing and sharp colors. Rubber and plastics manufacturers save material costs and gain improved rigidity or process performance. Paint and coatings benefit from high whiteness and ease of dispersion, leading to crisper finishes that hide flaws without constant stirring or settling. Toothpaste relies on it for gentle cleaning power, adding bulk without scratching tooth enamel. Food plants use select grades as additives in baking powders, dietary supplements, and stabilizers, always screening for purity and trace metal content. Environmental uses have grown, from flue gas cleaning to soil improvement, as industries look for safe, affordable ways to neutralize acids or boost pH. Even animal feed blends in the mineral for calcium enrichment.
Labs take a sharp focus on how to tailor particle shape and surface characteristics, pushing for ever-finer grades with improved compatibility in paints, rubbers, or pharmaceuticals. Researchers monitor how particle modifications improve dispersion or react with resins, looking to increase performance and lower costs. Environmental teams test recycled water streams, carbon capture, and lower-emission kilns to make production cleaner. Universities run pilot plants in pursuit of bio-based feedstocks and circular processes that loop waste carbon into new product. The trend runs toward customization, letting firms create products with just the right performance parameters for a particular resin, coating, or supplement.
Calcium carbonate draws attention for its inert nature—non-carcinogenic, non-mutagenic, and generally non-toxic at typical exposure levels. Toxicologists note that accidental ingestion rarely leads to problems, except in rare cases involving high doses that cause metabolic imbalances. Inhalation hazards remain real in the form of prolonged dust exposure leading to chronic respiratory issues such as pneumoconiosis, although cases in regulated industries prove uncommon. Researchers watch for ultrafine particles, where concerns about particle translocation and bioaccumulation spark new questions, especially in nano-formulations. Food and pharma regulators in the U.S., Europe, and Asia demand rigorous testing for contaminants like heavy metals, microbial load, and unexpected allergens, reinforcing the focus on process control over inherent toxicity.
The role of light calcium carbonate will keep rising as industries look for sustainable fillers, brighter coatings, and safe mineral additives. Carbon capture and storage intersect with this mineral’s basic chemistry: new plants trap CO₂ emissions using similar reactions needed to precipitate ultra-fine powders. Food and pharma products look for cleaner, low-lead and allergen-free sources. Additive manufacturing and bioplastics push for precision-tuned particles, adding performance but with a smaller carbon footprint. Disruptions in supply chains and tightening purity standards raise the stakes for local production and quality assurance. Ongoing research supports more value-added applications—intelligent coatings, antimicrobial composites, and even drug delivery systems—which means this once-humble mineral keeps proving its relevance in high-tech and green sectors everywhere.
Light calcium carbonate sounds technical, but it’s just a chalky white powder you find in everything from your toothpaste to the paint on your walls. It’s a pure form of calcium carbonate, made especially fluffy and fine. Paper plants use it to help pages look brighter; plastics companies mix it in to give products a solid, long-lasting feel. Light calcium carbonate stands out for its impressive whiteness, softness, and smooth texture.
This isn’t a straight-from-the-ground mineral. Factories start the process with high-purity limestone. They roast it in kilns, turning it into lime (calcium oxide). Water meets the lime, steam erupts, and it transforms into calcium hydroxide. The real trick comes next: bubbling pure carbon dioxide through this slurry. Out falls high-purity calcium carbonate as a fine powder, thanks to countless tiny microscopic crystals forming out of the mix. Drying and milling finish up the job, ensuring the product meets quality and safety standards. Good makers always check for contaminants, because plenty of industries demand material that’s nearly spotless.
Light calcium carbonate finds a place in everyday objects. That little crunch in antacid tablets, the creamy texture in some medicines, the base layer in many face powders—each owes something to this powder. Factories use it in latex gloves, in paint for even coverage, in PVC pipes for durability, and in paper for smoothness and brightness. Its widespread use emerges from how affordable and safe it is. The mineral isn’t dangerous to people and doesn’t harm the environment if handled right. This means manufacturers can rely on it for a huge range of tasks without worrying about dangerous side effects, both for workers and customers.
Production uses a lot of energy. Kilns burn at high temperatures, and it takes serious planning to reduce the carbon footprint. There’s no getting around it: traditional methods send out carbon dioxide, both from the heat and in the chemical reaction itself. Growing concern over climate change pushes companies to rethink old systems. Some invest in using renewable energy at every stage, switching to solar or wind power where they can. Others test out ways to capture the carbon dioxide emitted during the process—turning a liability into something useful for farming or beverage industries.
I’ve watched smaller manufacturers struggle with the costs of upgrading old equipment. Without help from policy, subsidies, or partnerships, these upgrades look out of reach. I think real change will come only when governments and industry groups team up. Grants or low-interest loans could speed the switch to cleaner production methods. More efficient kilns, strict emissions rules, and funding for carbon capture research would help.
Markets push producers to keep improving too. Customers want signs of greener production, so labels and certifications that show lower emissions or responsible sourcing become deciding factors. Every batch of light calcium carbonate contains not just chemistry, but also a story about energy, environment, and industry working together. The way these stories change over the next decade will shape the products we all use daily.
Light calcium carbonate isn’t a material that gets much attention, yet it keeps showing up in so many things I use every day. It stands out for being white, soft, and easy to shape. These aren’t just quirks—practically every manufacturer wants materials that mix well and disappear into their products, or boost their strength and smoothness without draining the budget.
Growing up, I’d notice cheap notebooks that left graphite smudges everywhere compared to smoother, pricier pages. That difference starts in the paper mill: light calcium carbonate acts as a filler and coating pigment. By packing these tiny particles into paper, mills achieve whiter, brighter sheets that don’t bleed as much ink. The paper industry leans on this mineral to bring down costs, too, as it replaces wood pulp while also reducing the paper’s weight.
Calcium carbonate in paper isn’t new. According to the U.S. Geological Survey, over half the light calcium carbonate produced worldwide ends up in paper production. Besides making paper look better, it helps buffer against acid, letting books and documents last longer on the shelf.
Most plastic products I’ve handled—containers, phone cases, toys—owe some of their durability to light calcium carbonate. Adding it to plastic raises the toughness and keeps plastics from bending or breaking. PVC, the same stuff in many home pipes and window frames, depends on this mineral to keep its shape and lower its overall price. That means cheaper plumbing and less brittle product packaging.
Rubber, especially in tires, gets a boost from calcium carbonate too. The mineral strengthens rubber and brings down the cost without making tires too rigid for the road. This helps manufacturers balance safety and affordability—a constant pressure in tire production.
I’ve painted enough rooms and watched enough renovation shows to know the value of a bright, solid color that doesn’t fade after a year. Light calcium carbonate is the secret to those clean shades in household paints. It acts as a base pigment, providing brightness, hiding power, and stability for the finished coat. Since it’s less expensive than pure titanium dioxide, it stretches costly pigments and stabilizes the mixture. The result: more affordable paints that still look sharp.
The food industry sprinkles light calcium carbonate into flour, drinks, and chewable supplements. It supplies calcium—a nutrient that gets flagged as a concern for many adults—and helps keep baked goods from caking up. In tablets, calcium carbonate shapes them and helps bind the other ingredients together. The FDA recognizes it as safe for food and drugs, so you’ll spot it in many ingredient lists, sometimes as ‘calcium supplement’ or ‘antacid’ in chewable tablets.
I’ve mixed concrete enough times to appreciate a good, consistent powder that keeps the structure together. Cement and tiles both pull from light calcium carbonate for their mass and consistency. Builders get smoother textures and stronger bricks, walls, and sidewalks. Even dry-mix plasters and adhesives improve their performance thanks to this reliable mineral.
Light calcium carbonate keeps popping up in my daily life, quietly making products tougher, cheaper, and cleaner. Still, there’s room to use it smarter. Some manufacturers have switched to greener mining and recycling calcium carbonate waste from other industries. If more firms got on board, we could ease pressure on quarries and make the life cycle of this humble mineral even more impressive.
People who reach for a chewable antacid or mix a glass of plant-based milk often don’t pause to read the fine print. Among the list of ingredients, “light calcium carbonate” pops up more often than folks realize. It shows up in slick white tablet coatings, supplements, and even in products designed for toddlers. Having worked with food product labels, I know the ingredients list isn’t just background noise — it’s a roadmap for safety, trust, and nutrition.
This white powder comes from limestone or marble, refined into a substance easy for food and medicine producers to measure and blend. Companies add it to baked goods, candy, or even toothpaste. It keeps things from caking, bulks up nutrition, and provides a handy source of calcium.
Plenty of research, and health agencies, have spent years sifting through its safety profile. The U.S. FDA cleared it as Generally Recognized as Safe (GRAS), meaning experts reviewed its use and found no risk at levels used in food. The European Food Safety Authority lined up behind that view. The Joint FAO/WHO Expert Committee on Food Additives also gave it the nod for regulated uses. Not all countries draw the same lines for food and medical additives, but the broad consensus speaks loudly.
Light calcium carbonate delivers more than filler. It supports bone health and reduces the risk of calcium deficiency. Brands serving people who avoid dairy, for instance, depend on it for achieving recommended calcium goals. For folks with trouble swallowing tablets, crushed forms mix easily with food or drink.
Skepticism never fully vanishes. Some people question whether additives, however familiar, should play such a sizable role in our diets. Others point out that excess calcium — from overzealous supplementation, for example — can raise the risk of kidney stones or slightly tilt heart health, especially for people over fifty. Hypercalcemia is rare but not unheard of. These risks crop up with overuse, not the small amounts found in fortified foods or most over-the-counter pills.
The solution starts with responsible manufacturing and transparent labeling. Reputable manufacturers run purity tests, screen for heavy metals, and trace back to the original quarry to avoid contamination. Calcium carbonate that makes its way into food or health products follows stricter rules than what’s set aside for industry. Food-grade means cleaner, and in the world of pharmaceuticals, even stricter checks apply.
As a parent and label reader, I stay cautious about unexplained mega-dosing. Reading guidance from sources like the National Institutes of Health, portion size matters. Most calcium-rich foods carry far less calcium carbonate than a supplement tablet, and recommendations put healthy adults below 2,500 mg calcium per day from all sources.
Folks looking to limit their food additives can skip certain processed items, or choose products marketed as additive-free. Patients with kidney problems or calcium metabolism disorders must talk to a doctor before taking supplements. For most people, opting for foods and supplements that explain their contents, and checking for independent quality certifications, adds an extra layer of confidence.
Understanding what’s in your food isn’t a luxury — it’s a responsibility we share with makers and regulators. Light calcium carbonate, when used thoughtfully and in moderation, plays its part in the pantry and the medicine cabinet — backed up by decades of safety checks and continued oversight.
Light calcium carbonate, made by chemical methods instead of grinding limestone, offers a powdery, soft texture and an unmistakable white color. Its main ingredient, calcium carbonate (CaCO3), makes up more than 98% of its composition. The particles feel fluffy to the touch, much less dense and more spreadable than ordinary ground chalk.
Purity often sets light calcium carbonate apart. Chemists look for its high CaCO3 content, which reaches above 98%. In labs, this means less interference from other materials: iron, magnesium, and heavy metals hardly show up in tests, which helps meet safety standards for food, medicine, or sensitive manufacturing. Its chemical makeup lets it act as a neutralizer—perfect for controlling acidity in a wide range of uses.
Dropped into acid, light calcium carbonate fizzes, releasing carbon dioxide (CO2) gas on contact. This simple reaction underpins its role in many products, from antacid tablets to the finishing touches of paper production. The negligible solubility in water—just trace amounts dissolve—adds to its flexibility without upsetting the chemistry of a finished item.
It comes as a white, airy powder. Density falls in the range of 0.8–1.0 g/cm3, much lighter than natural ground calcium carbonate, so it refuses to sink under its own weight. This lower density means more volume per kilo, which translates to less weight burden in transport and quicker mixing in solutions. Particle sizes range widely: most grades focus between 2-5 micrometers, small enough to hide in paints, plastics, rubbers, and putty.
Moisture content stays low, no more than 0.5%. This trait keeps light calcium carbonate stable during storage, so it won’t clump or create unpredictable results. The surface absorbs oils just enough to improve spread in coatings and cosmetics. Oil absorption numbers, usually sitting north of 40g per 100g, give it a creamy texture in soft materials, without turning them greasy.
In my experience, no chalk in the classroom, gloss in magazine pages, or chewable antacid in the drugstore escapes the influence of light calcium carbonate. In paints, it brightens colors and stretches pigment. Toothpaste manufacturers count on its gentle abrasiveness to clean teeth without scratching enamel. Papermakers mix it into pulp to get a crisp, bright sheet that holds ink with less smudging—enough to make glossy magazines look alive.
Food producers use the same powder to adjust dough texture and provide safe, digestible calcium for supplements. It appears on food labels as E170. In construction, adding this compound to plastics and sealants cuts costs, improves texture, and keeps materials from shrinking or losing strength. The chemical and physical makeup makes it a chameleon: it doesn’t grab the spotlight, but the final product feels, looks, and performs better.
The demand puts a strain on resources and raises environmental questions. Producing light calcium carbonate consumes energy and produces waste, which can pollute water and air. Automated, closed-loop processes can capture unused materials and reduce emissions. Stakeholders in the industry can look for renewable energy and better filtration systems. Companies that source limestone responsibly and recycle byproducts help keep the balance between what nature gives and what industry takes.
Another issue is the risk of inhaling fine powder during production or use. Investing in ventilation, masks, and advanced dust-collection controls keeps workplaces safer. Governments and firms should set clear standards, monitor exposure, and invest in worker education—because clean, safe production leaves a better product in the long run.
Some materials get treated like just another sack on a warehouse shelf. Light calcium carbonate isn’t one of those. Once dampness creeps in, even a little, the powder clumps together like lumpy flour. That’s not just an appearance issue—clumping can impact mixing and ruin the consistency of finished products, whether you’re in paint, plastic, or food production.
Climate control in the storage area matters. In my time working with chemical suppliers and on the production side for ceramics, I’ve seen how summer humidity wrecks entire batches if crews leave pallets near open dock doors. Overhead leaks—even tiny ones—in a storage warehouse turn a ton of powder into a mess, often before anyone notices.
Workers sometimes underestimate what covers count. Plastic sheeting and waterproof tarps protect from splashes or project dust, but for longer-term peace of mind, sealed containers or lined bags offer a better line of defense. Cardboard cartons alone rarely survive a month in a damp corner.
If you walk through a facility and see condensation on the walls, expect more than a ruined product. Mold loves damp calcium carbonate, and so do rodents. I’ve known factories losing thousands in one season by stacking raw powder next to a loading dock that never dried out after a storm.
Some storage rooms turn into saunas with no air movement. Without decent airflow, temperature jumps cause the air to “sweat,” leaving moisture to settle inside packaging. Avoid stacking bags too close to each other or against walls where air can’t circulate.
On the safety side, handling light powders like calcium carbonate needs more than a dust mask. Inhalation risk grows quickly when workers pour or transfer from sacks inside tight quarters. OSHA points out that extended exposure to airborne calcium carbonate dust can lead to respiratory irritation. Good ventilation systems with dust extraction not only keep product losses down but also protect health.
Small spills cost more than product loss. They lead to slip hazards and can mix into other materials by mistake. A friend running a small paint shop saw a costly recall after calcium carbonate tainted another pigment batch. Keeping sweepers handy and insisting workers clean up as they go makes a marked difference. Most accidents in powder handling aren’t dramatic—they’re a slow buildup of habits, or lack of them.
Floors should be smooth and free of cracks. Any break in the surface invites powder to settle in nooks, which means extra cleaning and contamination risk. Pallets in good shape keep sacks off the concrete, away from ground-level moisture and pests. Regular inspection reduces surprises and keeps a warehouse running smoothly.
Product quality comes down to the details—dry storage, airflow, good packaging, and routine cleaning may seem basic, yet skipping any of these steps can bring production to a halt. People in the field know that routine wins over shortcuts every time.
| Names | |
| Preferred IUPAC name | Calcium carbonate |
| Other names |
Precipitated Calcium Carbonate PCC Limestone powder Calcium carbonate light |
| Pronunciation | /ˈlaɪt ˈkælsiəm ˈkɑːbəneɪt/ |
| Preferred IUPAC name | Calcium carbonate |
| Other names |
Precipitated Calcium Carbonate PCC Calcium Carbonate Light CaCO₃ |
| Pronunciation | /ˈlaɪt ˈkælsiəm ˈkɑːbənət/ |
| Identifiers | |
| CAS Number | 1317-65-3 |
| Beilstein Reference | Beilstein Reference: 04-011-7391 |
| ChEBI | CHEBI:31344 |
| ChEMBL | CHEMBL1201593 |
| ChemSpider | 945 |
| DrugBank | DB09449 |
| ECHA InfoCard | 03-211-209-250-61 |
| EC Number | 471-34-1 |
| Gmelin Reference | 13522 |
| KEGG | C14826 |
| MeSH | Dental Materials |
| PubChem CID | 10111697 |
| RTECS number | FF9335000 |
| UNII | V9SC7V6HFY |
| UN number | UN3077 |
| CompTox Dashboard (EPA) | DTXSID3025735 |
| CAS Number | 1317-65-3 |
| Beilstein Reference | 1301796 |
| ChEBI | CHEBI:31344 |
| ChEMBL | CHEMBL1201760 |
| ChemSpider | 16115 |
| DrugBank | DB09467 |
| ECHA InfoCard | 07-2119537203-49-xxxx |
| EC Number | 471-34-1 |
| Gmelin Reference | Gm. 324 |
| KEGG | C07286 |
| MeSH | D013688 |
| PubChem CID | 10112323 |
| RTECS number | FF9335000 |
| UNII | V9SC7V6VQT |
| UN number | UN3077 |
| CompTox Dashboard (EPA) | CompTox Dashboard (EPA) of product 'Light Calcium Carbonate': **DTXSID7033297** |
| Properties | |
| Chemical formula | CaCO3 |
| Molar mass | 100.09 g/mol |
| Appearance | White powder or granular |
| Odor | Odorless |
| Density | 2.7 g/cm³ |
| Solubility in water | Insoluble in water |
| log P | 1.48 |
| Acidity (pKa) | 9.0 |
| Basicity (pKb) | 8.3 |
| Magnetic susceptibility (χ) | Diamagnetic |
| Refractive index (nD) | 1.59 |
| Dipole moment | 0.00 D |
| Chemical formula | CaCO3 |
| Molar mass | 100.09 g/mol |
| Appearance | White powder |
| Odor | Odorless |
| Density | 2.7 g/cm³ |
| Solubility in water | Practically insoluble in water |
| log P | -1.37 |
| Acidity (pKa) | 9.91 |
| Basicity (pKb) | pKb ≈ 3.7 |
| Magnetic susceptibility (χ) | Diamagnetic (-12.6 × 10⁻⁶ cgs) |
| Refractive index (nD) | 1.59 |
| Dipole moment | 0 Debye |
| Thermochemistry | |
| Std molar entropy (S⦵298) | 92.9 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -1206.9 kJ/mol |
| Std molar entropy (S⦵298) | 92.9 J·mol⁻¹·K⁻¹ |
| Std enthalpy of formation (ΔfH⦵298) | -1206.9 kJ/mol |
| Std enthalpy of combustion (ΔcH⦵298) | -1207 kJ/mol |
| Pharmacology | |
| ATC code | A02AC01 |
| ATC code | A02AC01 |
| Hazards | |
| Main hazards | The main hazards of Light Calcium Carbonate are: "Not classified as hazardous according to GHS; may cause mild eye or respiratory irritation in dust form. |
| GHS labelling | GHS07 |
| Pictograms | GHS07 |
| Signal word | Warning |
| Hazard statements | No hazard statement. |
| Precautionary statements | P261, P264, P271, P272, P280, P302+P352, P304+P340, P312, P321, P362+P364, P403+P233, P405, P501 |
| NFPA 704 (fire diamond) | NFPA 704: 1-0-0 |
| LD50 (median dose) | 6,450 mg/kg (rat, oral) |
| NIOSH | CC0700000 |
| PEL (Permissible) | 10 mg/m3 |
| REL (Recommended) | REL (Recommended Exposure Limit) for Light Calcium Carbonate: 5 mg/m³ (respirable fraction), 10 mg/m³ (total dust) |
| Main hazards | May cause irritation to eyes, skin, and respiratory tract. |
| GHS labelling | GHS07, Warning, H319: Causes serious eye irritation. |
| Pictograms | GHS07,GHS08 |
| Signal word | Warning |
| Hazard statements | May cause respiratory irritation. |
| Precautionary statements | P264, P280, P304+P340, P312, P305+P351+P338, P337+P313 |
| NFPA 704 (fire diamond) | 0-0-0 |
| LD50 (median dose) | 6,450 mg/kg (rat, oral) |
| NIOSH | CC058 |
| PEL (Permissible) | 15 mg/m3 (total dust) |
| REL (Recommended) | 300 mg/kg body weight/day |
| Related compounds | |
| Related compounds |
Heavy calcium carbonate Magnesium carbonate Calcium oxide Calcium hydroxide Calcium chloride |
| Related compounds |
Calcium carbonate Precipitated calcium carbonate Ground calcium carbonate Heavy calcium carbonate Calcium oxide Calcium hydroxide Magnesium carbonate Calcium chloride |
