Product Name: Tartaric Acid Monosodium Salt
Chemical Formula: C4H5NaO6
Other Names: Monosodium tartrate, Sodium hydrogen tartrate
CAS Number: 868-18-8
Recommended Uses: Laboratory reagent, food additive (acidity regulator), pharmaceutical intermediate
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GHS Classification: Eye Irritant (Category 2A), Skin Irritant (Category 2); not classed as toxic by ingestion at typical use levels
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, may cause mild skin irritation,
Precautionary Statements: Wear protective eyewear and gloves. Wash hands after handling. Keep out of children’s reach.
Health Hazard: May irritate mucous membranes, eyes, and skin on prolonged contact. Dust can worsen symptoms in those with asthma.
Environmental Hazard: Not considered highly hazardous to aquatic life in normal uses, but excessive amounts can disrupt pH in local waterways.
Chemical Name: Tartaric Acid Monosodium Salt
Common Synonyms: Sodium hydrogen tartrate, Monosodium tartrate
Concentration: Greater than 98% by weight
Impurities: Trace inorganic salts (<1%), water of crystallization possible depending on form
Inhalation: Move person to fresh air. Get medical help if cough, sore throat, or respiratory symptoms continue.
Skin Contact: Rinse skin with soap and water. Remove contaminated clothing and wash before reuse. See a doctor if irritation persists.
Eye Contact: Flush immediately with clean water for at least 15 minutes, lifting eyelids. Seek prompt medical attention for persistent discomfort.
Ingestion: Rinse mouth with water. Do not induce vomiting. Drink water if the person is aware and alert. Get medical advice—especially if large amounts swallowed.
Suitable Extinguishing Media: Water spray, dry chemical, foam, or carbon dioxide.
Unsuitable Extinguishing Media: Strong water jets can spread product dust.
Fire Hazards: Not flammable in solid form, but may break down to carbon oxides (CO, CO₂) and sodium oxides during fire; irritating fumes possible.
Protective Equipment: Firefighters should use full protective gear and self-contained breathing apparatus.
Advice for Firefighters: Cool containers with water spray to avoid pressure build-up. Avoid inhaling degraded or combusted material.
Personal Precautions: Use dust mask, gloves, and safety goggles. Ensure adequate ventilation in affected area.
Spill Response: Sweep up spilled solid avoiding dust formation. Collect and place in suitable, labeled container for disposal.
Environmental Precautions: Prevent release into drains, soil, and surface water. Avoid excessive runoff to minimize impact on aquatic life and pH.
Methods for Cleaning Up: Use non-sparking tools. Clean area thoroughly with water after material is removed.
Precautions for Safe Handling: Handle with adequate ventilation, especially where dusts form. Avoid contact with eyes and skin. Do not eat, drink, or smoke while handling.
Storage Conditions: Store in tightly closed containers in a cool, dry, and well-ventilated area. Keep away from moisture, strong bases, and oxidizing agents.
Incompatible Materials: Avoid strong alkalies, acids, oxidizers, and excess moisture.
General Hygiene: Wash hands after use and keep work area clean.
Occupational Exposure Limits: No established OSHA or ACGIH limits for this substance. Good industrial hygiene practices recommended.
Engineering Controls: Use local exhaust ventilation if dust forms.
Personal Protective Equipment: Eye protection (goggles), gloves (nitrile or rubber), protective clothing as needed for potential exposure.
Respiratory Protection: Use NIOSH-approved dust mask or respirator in high exposure settings.
Environmental Controls: Minimize accidental environmental release; maintain spill containment measures.
Appearance: White to colorless crystalline powder
Odor: Odorless
pH (1% solution): Slightly acidic, typically 3.5–4.5
Melting Point: Decomposes above 150°C
Solubility: Soluble in water, insoluble in ethanol
Vapor Pressure: Negligible at room temperature
Boiling Point: Not applicable (decomposes)
Density: About 1.76 g/cm³
Molecular Weight: 170.06 g/mol
Partition Coefficient: Not determined
Flash Point: Not flammable
Evaporation Rate: Not applicable
Chemical Stability: Stable under normal temperature and dry storage conditions
Hazardous Reactions: Reacts with strong acids and alkalis
Incompatibilities: Strong oxidizing agents, strong bases, excessive moisture
Hazardous Decomposition Products: Sodium oxides, carbon dioxide, carbon monoxide
Polymerization: Will not occur under proper use
Acute Toxicity: Low toxicity; LD50 (oral, rat): >2000 mg/kg
Inhalation Effects: Dust can irritate respiratory tract, worsen asthma
Skin Irritation: Redness, mild irritation after prolonged sweating or sensitive skin
Eye Effects: Significant irritation possible on direct contact
Long-term Exposure: No known chronic toxicity effects with normal handling; rare hypersensitivity reactions documented
Mutagenicity/Carcinogenicity: Not classified as carcinogenic by OSHA, IARC, or NTP
Aquatic Toxicity: Not acutely toxic to aquatic life in small quantities. Alters local water pH at high loads.
Persistence and Degradability: Readily biodegradable in environment; breaks down to natural organic acids
Bioaccumulation Potential: Does not bioaccumulate
Mobility in Soil: Moves with water; eco-impact tied to local concentrations
Other Environmental Effects: Large spills may require regulatory reporting for local water bodies due to temporary acidification risk
Product Disposal: Dispose as non-hazardous chemical waste unless contaminated; landfill or incineration in line with local rules
Contaminated Packaging: Rinse thoroughly, then dispose of per local regulations
Recommended Method: Use licensed waste contractor for significant quantities. Prevent entry to sewers and water systems.
Regulatory Note: Check for regional or national regulations on food-grade acids if exposed to large-scale accidental spill
UN Number: Not regulated for land, sea, or air transport
Transport Hazard Class: Non-hazardous
Packing Group: Not classified
Marine Pollutant: No
Special Precautions: Secure packaging to prevent shifting and rupture during transit; avoid moisture exposure
Labeling: Ensure accurate content labeling for customs and safety data purposes
OSHA: Not specifically regulated but general chemical safety provisions apply
SARA Title III (EPCRA): Not listed as a hazardous substance
TSCA: Listed
EU REACH: Registered, no special restrictions noted
California Proposition 65: Not listed
WHMIS (Canada): Not controlled
Labeling Requirements: Standard chemical label identifying product, hazard pictograms for eye/skin irritant required
Other Regulations: Meets status as food additive in some jurisdictions—check for limits and purity requirements in food, pharma, and lab settings
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