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Product Name: Manganese Dihydrogen Phosphate
Chemical Formula: Mn(H2PO4)2
CAS Number: 18718-07-5
Synonyms: Manganese(II) dihydrogen phosphate
Recommended Uses: Laboratory reagent, chemical synthesis, surface treatments
Supplier Details: Emergency contacts—including corporate phone number—should remain clear, reliable, and accessible at all hours to anyone dealing with accidental exposures, shipping disruptions, or site incidents.
Emergency Numbers: Local poison centers, corporate emergency desks, fire department connections
GHS Classification: Acute Toxicity (Oral, Category 4); Eye Irritation (Category 2A); Skin Irritation (Category 2)
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and eye irritation
Precautionary Statements: Wear protective gloves, avoid inhalation of dust, prevent contact with eyes and clothing
Hazard Symbol: Exclamation mark
Symptoms of Exposure: Stomach discomfort, redness or swelling on skin, serious eye irritation can develop, and chronic exposure may affect neurological health due to manganese accumulation
Chemical Name: Manganese Dihydrogen Phosphate
Purity: >95%
Chemical Identity: Mn(H2PO4)2
Impurities/Contaminants: Non-detectable for heavy metals like lead and cadmium under recommended handling
Other Components: Free moisture may vary, requiring regular laboratory checks for accurate mass use
Eye Contact: Rinse thoroughly with plenty of water for several minutes, pull back eyelids to clear particles, seek medical attention if irritation or redness persists
Skin Contact: Remove contaminated clothing, thoroughly wash with soap and water, call for help if irritation continues
Ingestion: Rinse mouth, drink water only if conscious, do not induce vomiting, contact a physician or poison control
Inhalation: Move to fresh air, keep at rest, support breathing as needed, monitor for persistent cough, consult a healthcare provider
Notes to Physician: Treat as a chemical exposure, focus on symptoms, be aware of possible central nervous system involvement with significant ingestion or prolonged contact
Suitable Extinguishing Media: Water spray, dry chemical, foam, or carbon dioxide
Specific Hazards During Fire: Phosphorus or manganese oxides may be produced on decomposition—these cause respiratory irritation
Protective Equipment for Firefighters: Full-body, heat-resistant suits; positive pressure self-contained breathing apparatus
Additional Advice: Avoid smoke inhalation, handle run-off contaminated water with caution, evacuate unnecessary personnel from fire zone
Personal Precautions: Wear respirators, chemical-resistant suits, and direct others away from the area
Emergency Procedures: Shut off ignition sources, coordinate rapid containment with barricades or absorbent barriers
Clean-Up Methods: Scoop spilled material using non-sparking tools into labeled waste containers, cover with inert absorbents such as vermiculite, ventilate area thoroughly
Environmental Precautions: Prevent run-off into storm drains, waterways, or soil; immediately report large leaks to authorities in line with local environmental protection standards
Handling: Always use inside approved laboratory hoods or ventilated workspaces, minimize dust generation, utilize double-layer containment where spillage could affect machinery or personnel
Storage: Keep tightly sealed, store in cool, dry conditions away from strong bases, acids, or oxidizing agents, check containers periodically for leaks; secure compounds on solid shelving to avoid accidental tipping or breakage
Incompatibilities: Avoid moisture ingress to limit product caking and prevent accidental reaction with other chemicals stored nearby
Occupational Exposure Limits: No published specific limit for this compound, but manganese dust (as Mn): OSHA PEL 5 mg/m³, ACGIH TLV 0.02 mg/m³ (respirable, as manganese)
Engineering Controls: Install local exhaust and process enclosure—especially over mixing tanks and powder feeders
Personal Protective Equipment: Chemical goggles, face shields, long-sleeve lab coats, heavy-duty gloves; work boots for industrial settings
Hygiene Measures: Immediately remove and launder contaminated clothing, wash hands and face after handling, avoid eating or drinking near operating zones
Appearance: White to pale pink crystalline powder
Odor: Odorless
pH: Approximately 2.5 – 3.5 in water suspension
Melting Point: Decomposes before melting
Boiling Point: Not applicable (solid, decomposes)
Flash Point: Not flammable
Solubility: Slightly soluble in cold water
Vapor Pressure: Not relevant
Density: Around 2.5–3.0 g/cm³
Particle Size: Consistent production lots support controlled reactivity and safety
Other Data: Hygroscopic under ambient humidity—ensure closed storage to preserve original specifications
Chemical Stability: Stable under recommended storage and handling
Hazardous Polymerization: Will not occur
Incompatible Materials: Strong oxidizing agents, concentrated alkalis, strong acids
Hazardous Decomposition Products: Manganese oxides, phosphorus oxides released at high temperature or on contact with hot acids
Conditions to Avoid: Excess heat, open flames, damp storage areas, incompatible chemical proximity
Acute Toxicity: May cause moderate toxicity if swallowed—nausea, vomiting, diarrhea typical at high doses
Skin Contact: Irritation and possible dermatitis with continuous exposure
Eye Contact: Irritating with redness, tearing, possible corneal damage if not washed out
Chronic Effects: Regular inhalation of manganese-containing dusts carries risk of neurological symptoms, memory and mood disturbances documented in occupational settings
Sensitization: No widespread data suggesting allergic skin or respiratory response in healthy adults under standard conditions
Ecotoxicity: Higher concentrations of manganese ions disrupt aquatic life, leading to impaired reproduction or mortality in fish or invertebrates
Environmental Fate: Water-soluble phosphate may leach into soil, persistent and not likely to biodegrade under standard conditions
Bioaccumulation: Manganese can build up in certain plant and animal species, influencing food chain exposure over time
Mobility in Soil: Moves through wet ground; potential to enter local water courses, prompt response can reduce risks
Other Adverse Effects: Prolonged or improper disposal accelerates risk for eutrophication in lakes or slow-moving rivers
Waste Disposal: Dispose of through permitted chemical or hazardous waste facility; consult local authority for region-specific guidance
Contaminated Packaging: Empty drums and bags require triple rinsing prior to authorized recycling or landfill; tightly seal any unused product in non-leaking containers
Special Instructions: Do not wash down the drain, burn, or combine with municipal trash; always track manifest paperwork for cradle-to-grave compliance
UN Number: Not regulated as dangerous under current United Nations transport guidelines
Proper Shipping Name: Manganese dihydrogen phosphate
Hazard Class: Not classified for main international routes (ADR, RID, IMDG, IATA)
Packing Group: Not assigned
Special Precautions: Cartons or drums should ride upright, protected from collapses or pallet piercings
Other Transport Notes: Secure SDS with every consignment; advise drivers and warehousing teams on accidental spill procedures
US Regulations: Not listed as a hazardous waste under RCRA, or as an extremely hazardous substance under EPCRA; TSCA inventory inclusion confirmed
EU Regulations: REACH: Substance registration supported, hazard labeling required for occupational lots
Other Listings: OSHA, ACGIH, NIOSH advisories for manganese apply; workplace air monitoring recommended
Labelling Requirements: GHS pictograms, hazard and precaution statements both in English and appropriate local language for rapid hazard recognition
Additional Notes: Review relevant country or regional guidance for annual updates—producers and users should document ongoing training for employees and keep a current SDS accessible at all worksite zones
