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Product Name: Zinc Citrate Dihydrate
Chemical Formula: C6H6O7Zn•2H2O
Synonyms: Trizinc dicitrate, Zinc citrate hydrate
CAS Number: 5990-32-9
Recommended Use: Used in dental care products, nutritional supplements, industrial and laboratory purposes
Manufacturer Contact: Information provided by supplier, often includes company name, address, emergency phone, and helpline for queries related to chemical properties and incidents
GHS Classification: Eye irritation (Category 2A), Specific target organ toxicity– single exposure (Category 3)
Signal Word: Warning
Hazard Statements: Causes serious eye irritation; may cause respiratory irritation; prolonged or repeated exposure may cause skin dryness or cracking
Precautionary Statements: Use protective measures to avoid contact with eyes, skin, and clothing; avoid generation and inhalation of dust; wear eye and face protection
Hazard Symbols: Exclamation mark
Routes of Exposure: Inhalation, ingestion, skin or eye contact
Chemical: Zinc Citrate Dihydrate
CAS No: 5990-32-9
Concentration: 100%
Impurities: Trace levels of heavy metals as regulated by local laws and supplier specifications, usually less than permitted limits
Additives: No intentional additives present
Inhalation: Move person to fresh air, monitor breathing; seek medical attention for persistent cough or difficulty breathing
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water; medical attention if irritation develops
Eye Contact: Rinse cautiously with water for at least 15 minutes, lift eyelids to ensure thorough flushing; obtain medical assistance if irritation persists
Ingestion: Rinse mouth with water; seek medical help if symptoms appear or large amounts have been swallowed
Suitable Extinguishing Media: Use foam, dry chemical powder, carbon dioxide, or water spray
Hazardous Combustion Products: May emit zinc oxides and carbon oxides during fires involving high temperatures
Protective Equipment: Firefighters should use self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes
Special Procedures: Evacuate area immediately, avoid inhaling combustion gases; cool fire-exposed containers with water spray to prevent pressure buildup
Personal Precautions: Wear suitable protective equipment, such as gloves, goggles, and dust mask; avoid creating and breathing dust
Environmental Precautions: Avoid discharge of material into drains, waterways, or soil; contain spills to prevent environmental contamination
Cleanup Methods: Sweep up and place material into suitable labeled containers for disposal; use methods that avoid dust generation, such as damp brushing or vacuuming with HEPA filter; ventilate affected area during cleanup
Safe Handling: Handle in well-ventilated places; minimize dust generation; implement good industrial hygiene practices, including washing hands before breaks and after handling
Incompatible Materials: Strong oxidizers, strong acids
Safe Storage: Store in tightly closed containers in a cool, dry, and well-ventilated area; limit exposure to moisture and incompatible substances; segregate from foods and animal feeds
Engineering Controls: Use local exhaust ventilation to control airborne concentrations; handle in enclosed systems if possible to limit exposure
Eye/Face Protection: Safety goggles
Skin Protection: Chemical-resistant gloves, long sleeves, and lab coat or apron
Respiratory Protection: Use NIOSH-approved dust masks or respirators when airborne concentrations exceed or may exceed exposure limits
Occupational Exposure Limits: OSHA PEL and ACGIH TLV for zinc compounds: 5 mg/m³ (respirable fraction, as Zn)
Hygiene Measures: No eating, drinking, or smoking in work areas; wash hands thoroughly before leaving laboratory or industrial location
Appearance: White to off-white powder
Odor: Odorless
pH: 6.0–8.0 (@ 5% solution in water)
Melting Point: Decomposes above 150°C
Boiling Point: Not applicable
Solubility: Slightly soluble in water (approximately 0.3 g/L at room temperature)
Vapor Pressure: Not relevant in solid form
Density: Approximately 2.3 g/cm³
Molecular Weight: 574.56 g/mol
Partition Coefficient (n-octanol/water): Not determined
Flash Point: Not flammable
Chemical Stability: Stable under normal handling and storage conditions
Conditions to Avoid: Excessive heat, humidity, dust formation, incompatible substances like strong oxidizing agents
Hazardous Reactions: No hazardous polymerization expected
Decomposition Products: Zinc oxide, carbon monoxide, and carbon dioxide may form under combustion or extreme heat
Incompatible Materials: Strong acids, strong oxidizing agents
Acute Toxicity: Low acute oral toxicity; single large doses may cause gastrointestinal upset, including nausea and vomiting
Chronic Effects: Long-term ingestion or inhalation may lead to zinc toxicity, including symptoms like abdominal pain, anemia, or reduced immune function
Skin/Eye Irritation: May cause mild skin irritation and moderate to severe eye irritation based on experience with zinc salts
Inhalation Risks: Breathing high concentrations of dust may cause respiratory tract irritation, coughing, and short-term discomfort
Sensitization: Not expected to cause skin or respiratory sensitization
Carcinogenicity: No evidence of carcinogenicity in humans from available data
Mutagenicity/Teratogenicity: No mutagenic or teratogenic effects found in standard animal tests
Aquatic Toxicity: Toxic to aquatic organisms at higher concentrations; zinc salts may disrupt aquatic life if released in large quantities
Persistence and Degradability: Inorganic compound; does not break down biologically but may persist in the environment
Bioaccumulation Potential: Low to moderate; zinc may accumulate in aquatic species
Mobility in Soil: Zinc ions can migrate in moist soils, potential for groundwater contamination if released in uncontrolled quantities
Additional Information: Prevent large spills from reaching water bodies or sewer systems due to risk to aquatic life
Waste Methods: Dispose of material according to local, regional, or national environmental regulations; treat as hazardous waste if contaminated
Container Disposal: Empty containers should be thoroughly rinsed and then disposed of as non-hazardous scrap or recycled
Precautions: Do not dispose of product or rinsate via drains or natural waterways; minimize dust during handling and transfer to prevent environmental discharge
UN Number: Not regulated for transport by most agencies
Transport Hazard Class: Not classified as hazardous for transport
Packing Group: Not regulated
Marine Pollutant: No
Special Precautions: Ensure container integrity, prevent physical damage during loading or shipping, keep away from foodstuffs
Global Inventories: Listed on TSCA, EINECS/ELINCS, AICS, DSL/NDSL
Regulatory Status: Not classified hazardous under most national or international regulations
OSHA Status: Hazardous under provisions for dust/mist exposures
SARA Title III (Sections 311/312): Immediate health hazard
Other Information: Check product label and accompanying documentation for additional country-specific safety notifications or workplace methods that must be implemented by end users
