Product Name: Paratartaric Acid
Chemical Formula: C4H6O6
Recommended Use: Antioxidant, acidulant, stabilizer in food and beverages; common in winemaking to stabilize tartrate precipitation.
Supplier Details: Manufacturer and distributor contact information follows company policy, with local emergency telephone and emergency response contacts provided on container labels and shipping documents.
Synonyms: DL-Tartaric Acid, Racemic acid, Paratartaric
CAS Number: 133-37-9
UN Number (for transport): 3261 (for corrosive solid, acidic, organic, n.o.s., if tested as dangerous material)
Signal Word: Warning
Hazard Classification: Eye irritation (Category 2A), Skin irritation (Category 2), Specific target organ toxicity—single exposure (Category 3)
GHS Label Elements: Exclamation mark pictogram, hazard statement codes as relevant
Primary Hazards: Causes serious eye irritation; may cause skin irritation; possible respiratory tract irritation; not acutely toxic by ingestion at low amounts, but repeated exposure could lead to gastrointestinal discomfort
Other Dangers: Dust can form explosive mixtures in air at high concentrations; contact with strong bases can create exothermic reactions
Chemical Name: Paratartaric Acid
Concentration: 99–100% (typically contains minimal moisture)
Impurities: Trace metals and water content less than 0.5% depending on the grade
Ingredient CAS Number: 133-37-9
EC Number: 205-105-7
Inhalation: Remove person from exposure area to fresh air; keep comfortable for breathing; seek medical attention if symptoms persist (coughing, airway irritation).
Skin Contact: Remove contaminated clothing; wash skin thoroughly with soap and running water; seek medical attention if irritation develops.
Eye Contact: Rinse eyes immediately with plenty of clean water, lifting eyelids occasionally; seek immediate medical attention for persistent discomfort or vision changes.
Ingestion: Rinse mouth with water thoroughly; do not induce vomiting; seek prompt medical attention, especially if large quantities are ingested or symptoms develop.
Suitable Extinguishing Media: Dry chemical powder, carbon dioxide, foam, or water spray (mist); do not use strong water streams directly.
Hazardous Combustion Products: Oxides of carbon, possible acrid fumes or decomposition acids
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective gear against acids and fumes
Special Hazards: Dust may form combustible mixtures with air in an enclosed space; thermal decomposition produces irritating or toxic gases
Firefighting Procedures: Move containers away from fire zone if safely possible; cool with water spray to prevent pressure buildup, avoid use of direct water streams to limit dispersal of material.
Personal Precautions: Wear dust mask, eye protection, chemical-resistant gloves, long-sleeved protective clothing.
Spill Clean-Up Methods: Avoid dust generation; sweep or vacuum up spilled product and transfer to labeled waste container; ventilate area, avoid runoff into surface waterways.
Environmental Precautions: Prevent larger spills from entering drains, soil, or water sources; alert appropriate authorities for significant releases.
Disposal: Follow local regulations for proper chemical waste disposal; do not attempt neutralization without proper training.
Handling: Keep containers tightly closed, use with adequate local exhaust ventilation, minimize dust; avoid skin and eye contact, keep away from incompatible materials.
Storage: Store in cool, dry, well-ventilated place; avoid humidity and direct sunlight; keep separate from alkaline substances, bases, or oxidizers.
Special Practices: Store product off the floor to prevent absorbance of moisture; label all storage containers clearly; stack no higher than recommended by supplier.
Exposure Limits: No official occupational exposure limit established, use good industrial hygiene practices.
Engineering Controls: Local exhaust ventilation or process enclosure recommended for dust control.
Personal Protective Equipment: Chemical safety goggles, nitrile or neoprene gloves, protective clothing to prevent skin exposure, dust respirator for handling large quantities or insufficient ventilation.
Hygiene Measures: Wash hands and face thoroughly after handling; remove contaminated clothing before eating, drinking, or smoking.
Physical State: Solid powder or granules
Color: White to off-white
Odor: None or faintly sour
pH (1% Solution): About 2.3 at 25°C
Melting Point: Approximately 140°C (284°F) (decomposes)
Solubility: Readily soluble in water; sparingly soluble in ethanol
Vapor Pressure: Negligible
Specific Gravity: 1.76 g/cm³ at 20°C
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not flammable as a solid
Explosive Properties: Dust can become explosive in high concentrations with air
Partition Coefficient (n-octanol/water): Not available
Reactivity: Reacts vigorously with strong bases and oxidizing agents; may form salts with metals.
Chemical Stability: Stable under recommended storage conditions; may decompose on exposure to humidity, strong heat or moisture.
Hazardous Polymerization: Does not occur.
Incompatible Materials: Strong bases, oxidizing agents, reducing agents.
Decomposition Products: Carbon monoxide, carbon dioxide, acrid or toxic fumes with severe overheating.
Conditions to Avoid: Excessive heat, moisture, contact with incompatible chemicals.
Acute Toxicity: Low toxicity; LD50 (oral, rat): estimated > 5,000 mg/kg
Skin Irritation: Possible irritation, especially on prolonged exposure or if skin is already damaged.
Eye Irritation: Strongly irritant; risk of irritation, redness and pain.
Inhalation: Inhalation of dust may cause coughing, throat or respiratory irritation.
Chronic Effects: No clear evidence for carcinogenicity, mutagenicity, or reproductive toxicity in available studies; chronic overexposure may cause repetitive gastrointestinal disturbances.
Sensitization: No cases of allergic skin reaction have been established.
Aquatic Toxicity: Low toxicity to aquatic organisms; does not bioaccumulate significantly.
Environmental Fate: Readily biodegradable in soil and water under aerobic conditions.
Mobility: High mobility in water due to high solubility; sparingly mobile in soil depending on moisture.
Persistence: Breaks down into naturally occurring tartarates and simple organic acids; not persistent in environment.
Other Effects: May locally lower pH of water and soil temporarily if released in significant concentrations.
Waste Disposal Methods: Dispose of unused material and residues in accordance with local, regional, and national environmental regulations for organic acids.
Packaging: Rinse containers and offer for recycling or reconditioning, if legal and feasible.
Biodegradability: Material breaks down with dilution and biological treatment.
Precautions: Do not release into surface waters, drains or sewers in concentrated form; avoid dispersal of dust.
Regulatory Compliance: Ensure disposal method eliminates potential for accidental contact, leakage, and reactivity hazards.
UN Number: 3261 for regulated shipments; check shipment size and material classification locally
UN Proper Shipping Name: Corrosive solid, acidic, organic, n.o.s. (if applicable)
Transport Hazard Class: 8 (Corrosive, if tested as such)
Packing Group: III, dependent on aggregate shipment hazard test
Environmental Hazards: No significant hazard unless spillage occurs
Special Precautions: Keep container sealed and upright during transit, avoid mechanical shock; protect against weather; handle per transport regulation for hazardous solids, if applicable.
Safety, Health, and Environmental Regulations: Subject to global inventory listings including REACH (EU), TSCA (US), DSL (Canada), AICS (Australia), ENCS (Japan)
Labeling Requirements: Hazard pictogram, precautionary and hazard statements as per GHS standard
OSHA Classification: Not specifically listed as hazardous substance under OSHA HazCom Standard, but classified as an irritant
Other Regulatory Restrictions: Not listed as a controlled chemical; users must comply with workplace health and safety standards for handling irritant powders
SARA 311/312 Hazard Categories (US): Immediate health hazard (acute)
Product Registration: Registration and use approval varies by country, always check local regulation for latest updates.
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