Product Name: Monopotassium Monosodium Tartrate Tetrahydrate
Other Names: Rochelle Salt, Potassium Sodium Tartrate Tetrahydrate
Chemical Formula: KNaC4H4O6·4H2O
CAS Number: 6381-59-5
Recommended Use: Laboratory reagent, food additive (E337), buffer agent
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Emergency Contact: [Emergency phone number]
GHS Classification: Not classified as hazardous according to GHS
Label Elements: Not required under GHS standards
Signal Word: None
Hazard Statements: No known significant effects
Precautionary Statements: Avoid inhalation of dust, prevent eye and skin contact, follow good laboratory hygiene
Potential Health Effects: Mild irritation possible on eye or skin contact; ingestion may cause mild gastrointestinal discomfort
Environmental Hazards: Considered not dangerous for aquatic environment in normal use
Chemical Identity: Monopotassium Monosodium Tartrate Tetrahydrate
Synonyms: Rochelle Salt, Potassium Sodium Tartrate Tetrahydrate
CAS Number: 6381-59-5
EC Number: 204-711-8
Purity: 98–100% (typical for laboratory grade)
Impurities: Trace metals at low ppm levels
Molecular Weight: 282.22 g/mol (tetrahydrate)
Inhalation: Move person to fresh air, seek medical attention for symptoms
Skin Contact: Remove contaminated clothing, wash skin with plenty of water and soap
Eye Contact: Rinse thoroughly with water for at least 15 minutes, seek medical attention if discomfort persists
Ingestion: Rinse mouth, give plenty of water to drink, seek medical advice if symptoms develop
Most Important Symptoms: Mild irritation to skin, eyes, or respiratory system; large amounts could cause upset stomach
Indication of Immediate Medical Attention: None expected for normal exposure
Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Hazards from Combustion: Emits carbon oxides, potassium and sodium oxides, possible toxic fumes
Protection for Firefighters: Full protective clothing and self-contained breathing apparatus
Specific Hazards: Product itself is non-combustible; containers may burst if exposed to extreme heat
Special Advice: Avoid inhalation of combustion products
Personal Precautions: Avoid dust generation, wear suitable protective gear
Environmental Precautions: Prevent large quantities entering waterways; small spills can be washed to drain with plenty of water
Cleanup Methods: Sweep up, place in suitable containers for disposal; clean spill area with water
Decontamination: Rinse area thoroughly
Safe Handling: Work in local exhaust or ventilated area; handle to minimize dust; avoid contact with eyes and skin
Hygiene Measures: Wash hands after use, do not eat or drink near the product
Safe Storage Conditions: Store in tightly closed containers in cool, dry, well-ventilated location
Storage Temperature: Store at room temperature
Incompatible Materials: Strong acids, strong oxidizing agents, avoid contact with moisture if packaging not sealed
Occupational Exposure Limits: No established limits for this material
Engineering Controls: Use local exhaust ventilation to control dust
Respiratory Protection: If dust forms, wear NIOSH-approved dust mask
Eye Protection: Safety glasses with side shields recommended
Skin Protection: Laboratory gloves, long sleeves recommended
Environmental Controls: Avoid release to the environment in large quantities
Form: Crystalline powder or granules
Color: White to colorless
Odor: Odorless
pH (5% solution): 7.0–8.5
Melting Point: Decomposes above 70°C (loss of water)
Boiling Point: Not applicable
Solubility: Soluble in water (approx. 630 g/L at 25°C); insoluble in alcohol
Density: Approx. 1.79 g/cm³
Vapor Pressure: Negligible
Partition Coefficient: Not available
Flash Point: Not applicable
Auto-ignition Temperature: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Possibility of Hazardous Reactions: May react with strong oxidizers or strong acids
Conditions to Avoid: Excessive heat, moisture, contact with incompatible substances
Hazardous Decomposition Products: Carbon dioxide, carbon monoxide, potassium oxide, sodium oxide upon thermal decomposition
Incompatible Materials: Strong acids, strong oxidizers
Acute Toxicity: Oral LD50 (rat) estimated >5000 mg/kg, considered low toxicity
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Skin or eye contact may cause mild irritation; inhalation or ingestion of large amounts may cause gastrointestinal symptoms
Chronic Effects: No known chronic health effects
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity: No evidence reported
Reproductive Toxicity: No evidence reported
Aquatic Toxicity: No significant toxicity to fish or aquatic invertebrates expected under normal conditions
Persistence and Degradability: Ingredient rapidly degrades in the environment, biodegradable
Bioaccumulative Potential: Does not bioaccumulate
Mobility in Soil: High water solubility increases mobility through soil
Other Adverse Effects: No known significant environmental effects
Waste Disposal Methods: Dispose of in accordance with local, regional, and national regulations; small quantities can be flushed to drain with plenty of water
Container Handling: Rinse containers before recycling or disposal
Environmental Precautions: Prevent large quantities from entering public waterways or soil
UN Number: Not regulated
Proper Shipping Name: Monopotassium Monosodium Tartrate Tetrahydrate
Transport Hazard Class: Non-hazardous material
Packing Group: Not regulated
Environmental Hazards: None
Special Precautions: Avoid generating dust during transport, keep container tightly sealed
Inventory Listings: Listed on TSCA, EINECS, AICS, DSL, NZIoC, ENCS, PICCS, and other chemical inventories
Regulatory Status: Not considered hazardous under OSHA, WHMIS, or GHS regulations
Food Additive Status: Acceptable for use as food additive (E337) according to EU and FDA guidelines when meeting purity specifications
SARA Title III: Not listed
California Proposition 65: Not listed
Other Regulations: All local, regional, and international chemical safety laws apply
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