Product Name: L(+)-Tartaric Acid Potassium Sodium Salt
Synonyms: Potassium Sodium Tartrate, Rochelle Salt
CAS Number: 6381-59-5
Recommended Uses: Laboratory reagent, food additive (E337), piezoelectric devices
Supplier: Information available from local distributor or manufacturer
Emergency Contact: Refer to local poison center or chemical safety authority
Classification: Eye irritant (Category 2A, GHS)
Signal Word: Warning
Hazard Statements: Causes serious eye irritation; May cause mild skin irritation; Inhalation may cause mild respiratory discomfort
Pictograms: Exclamation mark (GHS07) for irritant
Precautionary Statements: Avoid contact with eyes, skin, and clothing; Wash hands thoroughly after handling; Use personal protective equipment as needed
Human Health Risks: No known significant acute toxicity by ingestion in small quantities, but high doses could cause gastrointestinal upset
Chemical Name: Potassium Sodium Tartrate
Common Name: Rochelle Salt
Synonyms: Potassium Sodium Tartrate Tetrahydrate
Formula: KNaC4H4O6·4H2O
Molecular Weight: 282.22 g/mol
CAS Number: 6381-59-5
Concentration: 100% (analytical or reagent grade)
Impurities: Product with high purity typically contains trace moisture, minimal inorganic residue
Eye Contact: Rinse cautiously with water for 15 minutes. Remove contact lenses if present and continue rinsing. Seek medical attention if irritation persists.
Skin Contact: Wash affected skin with soap and plenty of water. Remove contaminated clothing and shoes. Seek medical evaluation for persistent or severe irritation.
Inhalation: Move person to fresh air. Restore breathing if necessary. If symptoms such as coughing or throat irritation occur and persist, consult medical advice.
Ingestion: Rinse mouth with water; do not induce vomiting. Seek medical attention if large amounts have been swallowed or symptoms develop.
Acute/Delayed Symptoms: May cause eye redness, tearing, skin rash, nausea with ingestion.
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam; Select media appropriate for surrounding fire.
Hazardous Combustion Products: May include carbon oxides (CO, CO2), possible oxides of potassium or sodium
Protective Equipment for Firefighters: Wear full protective gear, self-contained breathing apparatus
Special Hazards: Nonflammable solid; Heat from fire may cause substance decomposition with release of irritating gases.
Special Procedures: Prevent fire water from entering drains or surface water.
Personal Precautions: Avoid dust formation. Use personal protection recommended in Section "Exposure Controls and Personal Protection". Ventilate area.
Environmental Precautions: Prevent spilled material from entering drains, sewers, or surface water.
Spill Cleanup: Sweep up using non-sparking tools, avoid stirring dust. Collect in labeled containers for disposal. Clean surface with plenty of water.
Other Measures: Wear gloves, goggles, and dust mask during clean-up.
Handling Measures: Work in well-ventilated areas. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Use appropriate personal protective equipment.
Safe Storage: Store in cool, dry, well-ventilated place, away from sources of moisture and incompatible substances such as strong acids or bases. Keep container tightly closed and properly labeled.
Incompatibilities: Avoid contact with acids (substance may decompose, releasing fumes). Also incompatible with strong oxidizers.
Engineering Controls: Provide local exhaust ventilation or use chemical fume hood.
Personal Protective Equipment (PPE): Wear safety goggles or face shield, chemical-resistant gloves (nitrile or neoprene), standard lab coat.
Respiratory Protection: Use dust mask or NIOSH/MSHA-approved respirator in dusty environments.
Hygiene Practices: Wash hands before breaks and after handling. Remove soiled clothing and wash before reuse.
Environmental Controls: Avoid release to the environment whenever possible.
Occupational Exposure Limits: No established TLV or PEL for this substance; minimize exposure based on good laboratory practices.
Appearance: Colorless to white crystalline powder or transparent crystals
Odor: Odorless
Melting Point: Decomposes above 75°C
Boiling Point: Not applicable (decomposes before boiling)
Solubility: Soluble in water; insoluble in ethanol
pH (10% solution): Approximately 7–8.5
Vapor Pressure: Negligible
Partition Coefficient (n-octanol/water): Not available
Flash Point: Not combustible
Relative Density: 1.79 g/cm³ at 20°C
Other Properties: Hygroscopic; forms efflorescent crystals
Chemical Stability: Stable under ambient conditions when kept dry and sealed
Decomposition: Heating above melting point releases carbon oxides and irritating fumes
Reactivity: Reacts with strong acids yielding effervescence from CO2 release
Hazardous Reactions: No significant risk under normal laboratory conditions
Incompatible Materials: Strong oxidizers, strong acids, strong bases
Polymerization: Will not occur
Likely Routes of Exposure: Ingestion, inhalation, skin, and eye contact
Acute Toxicity: Low toxicity reported based on animal studies; large doses may cause gastrointestinal discomfort
Chronic Effects: No evidence of chronic toxicity from occupational or consumer use
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, OSHA
Other Health Effects: Eye irritation is the principal health concern; Prolonged contact with skin could cause irritation but not sensitization or significant systemic toxicity
Symptoms: Redness, watering of eyes, nausea or cramping if ingested in substantial amounts
LD50 (oral, rat): >2,000 mg/kg (practically non-toxic)
Environmental Fate: Readily biodegradable, soluble in water
Aquatic Toxicity: Low toxicity to aquatic organisms; not expected to bioaccumulate
Persistence: Breaks down in the environment through natural processes
Mobility in Soil: High mobility as dissolved ions
Known Effects on Terrestrial Organisms: Limited adverse impact on soil flora or fauna reported for typical releases
Precautions: Large discharges into water bodies could affect pH and have localized impact; minimize to avoid contamination
Waste Disposal: Collect and dispose of according to local, regional, and national regulations. Product is not classified as hazardous waste.
Container Disposal: Rinse empty containers before recycling or disposal. Avoid reuse of containers for other substances.
Precautions: Do not discharge large quantities into public waterways or sewage systems.
Recommended Treatment: Can be dissolved in water and flushed to drain in accordance with authority approval; otherwise use licensed chemical waste handler.
UN Number: Not classified as hazardous for transport
Shipping Name: Not regulated for ground, sea, or air transport
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Not classified as hazardous to the environment for transport purposes
Special Precautions: Avoid spillage and packaging breakage during transport; keep container sealed and dry
Chemical Inventory Listing: Listed on major chemical inventories (TSCA, EINECS, DSL)
Dangerous Goods Classification: Not regulated as a dangerous good
SARA Title III (Sections 311/312): Not subject to hazard reporting
California Prop 65: Not listed
Workplace Labeling Requirements: Standard workplace labeling for laboratory or industrial chemicals advised; safety data sheet should be accessible at point of use
Other Regulations: Use in accordance with food additive guidelines if applicable (Codex, FDA, EFSA)
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