Chemical Name: Potassium Sodium Tartrate
Synonyms: Rochelle Salt, Seignette Salt
Chemical Formula: KNaC4H4O6·4H2O
CAS Number: 6381-59-5
Recommended Use: Buffering agent, laboratory reagent, food additive, piezoelectric applications
Manufacturer: Usually specified by the supplier at point of purchase
Contact for Emergency: Local poison hotline, hospital, emergency room, or company-provided number
Classification: Not classified as hazardous under GHS standards
Acute Effects: May irritate eyes, skin, respiratory tract
Chronic Effects: No long-term effects reported in commonly referenced data
Environmental Threats: Low level for water, soil, or air contamination
Signal Word: None
Pictograms: None required
Precautionary Statements: Avoid inhalation of dust, avoid direct skin or eye contact, use in well-ventilated areas
Main Ingredient: Potassium Sodium Tartrate
Chemical Formula: KNaC4H4O6·4H2O
Purity: Typically >99%
Impurities: Trace amounts of related potassium or sodium compounds depending on manufacturer, generally in extremely low concentrations
Hazardous Components: None reported in commercial or reagent grade product
Inhalation: Move affected person out of exposure and into fresh air; seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing, wash skin with plenty of water and soap
Eye Contact: Rinse carefully with running water for at least 15 minutes, keep eyelids open, consult a physician if irritation persists
Ingestion: Rinse mouth thoroughly, offer water in small sips, seek medical advice if discomfort persists
Notes for Medical Personnel: Symptomatic treatment recommended; potassium sodium tartrate is not considered highly toxic but irritation and gastric upset could occur
Suitable Extinguishing Media: Water spray, foam, dry chemical powder, carbon dioxide
Specific Hazards: Product itself is not combustible, but packaging or impurities may burn and give off irritating fumes
Protective Equipment: Firefighters should wear full protective gear including self-contained breathing apparatus
Special Procedures: Avoid releasing runoff from fire control to drains or watercourses
Hazardous Combustion Products: Carbon oxides, sodium and potassium oxides
Personal Precautions: Avoid dust formation, ensure good ventilation, use personal protective equipment
Environmental Precautions: Prevent large amounts from entering drains or watercourses
Methods for Cleanup: Sweep up spills, collect in suitable container for disposal, wash affected area with water
Special Considerations: Use non-sparking tools, avoid creating airborne particles
Handling: Use in a well-ventilated area, avoid generation of dust, do not eat or drink at workstation, always wash hands after handling
Storage Conditions: Store in a tightly closed container, in a cool dry place
Incompatible Materials: Strong acids, strong bases, oxidizing agents
Safe Storage Materials: Glass, polyethylene, or other chemical-resistant packaging
Separation: Keep away from food and drink
Permissible Exposure Limits: Not established by OSHA, ACGIH, or NIOSH
Engineering Controls: Work in fume hood or well-ventilated area if large amounts are handled
Respiratory Protection: Dust mask recommended for substantial dust exposures
Eye Protection: Safety goggles
Hand Protection: Chemical-resistant gloves
Other Protective Equipment: Lab coat, clothing that covers exposed skin
Appearance: Colorless to white crystalline powder
Odor: Odorless
Water Solubility: Very soluble (over 600 g/L at 25°C)
Melting Point: Decomposes with loss of water at around 70°C
Boiling Point: Not available (decomposes before boiling)
pH (5% solution): Typically around 7.0-8.5
Partition Coefficient: Not required for inorganic salts
Vapor Pressure: Negligible at room temperature
Density: Around 1.8 g/cm³ (solid)
Chemical Stability: Stable under normal ambient conditions
Conditions to Avoid: Excess heat, moisture, contact with strong oxidizing acids, and bases
Incompatible Materials: Strong acids, strong oxidizers, bases
Hazardous Decomposition Products: Carbon oxides, potassium and sodium oxides when heated intensely
Polymerization: Does not occur
Acute Toxicity: Low toxicity by oral, dermal or inhalation routes; large quantities may lead to gastric upset
Skin Irritation: Low risk; prolonged or repeated contact could cause mild irritation
Eye Irritation: Dust can cause mechanical irritation
Chronic Effects: Not known to produce chronic health problems
Carcinogenicity: Not listed as a carcinogen by IARC, NTP, or OSHA
Mutagenicity: No mutagenic potential found in available studies
Other Health Effects: Pre-existing skin or respiratory conditions may experience increased sensitivity
Mobility in Soil: Dissolves completely and moves through soil with water
Aquatic Toxicity: Low toxicity to aquatic organisms at likely environmental concentrations
Persistence and Degradability: Product and its dissociation products are stable, ultimately break down into ions naturally present in the environment
Bioaccumulation Potential: Low, does not build up in organisms
Other Adverse Effects: Excessive quantities may alter local water chemistry if large accidental release takes place
Disposal Methods: Small quantities can often go with regular laboratory waste; for larger quantities, contact appropriate waste disposal authorities
Container Disposal: Rinse out empty containers and recycle or dispose in line with local regulations
Special Precautions: Avoid releasing substantial amounts into drains, soils, or natural water bodies
UN Number: Not classified as a hazardous material for transportation
Transport Hazard Class: Not regulated as dangerous goods
Packing Group: Not applicable
Shipping Name: Potassium Sodium Tartrate
Special Transport Precautions: Protect from moisture and keep container tightly sealed during transport to avoid caking or accidental spillage
OSHA Status: Not classified as hazardous under OSHA standards
TSCA Status: Listed in the TSCA inventory
SARA Status: Not listed as an extremely hazardous substance, has no specific SARA Title III Section 313 reporting requirements
EPA: Not regulated under hazardous waste rules
Other Regulations: Food Additive status (21 CFR 172.868) allows for specified use in food processing in compliance with FDA limits; local occupational guidelines may still apply for handling in large-scale or industrial settings
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