Chemical name: Dibenzoyl-L-tartaric acid monohydrate
Chemical formula: C18H14O8·H2O
CAS Number: 32634-66-5
Relevant uses: Chiral resolving agent, research chemical, used in synthesis of enantiomers and separation in pharmaceutical labs
Synonyms: L-(+)-Dibenzoyl tartaric acid, DBTA monohydrate
Supplier contact: Details available from distributor or producer, ensure emergency contact included on hand
Classification: Not classified as hazardous under GHS criteria, but prolonged exposure may irritate eyes, skin, or respiratory system
Label elements: No hazard pictogram required, hazard statement for irritation risk
Routes of exposure: Inhalation, skin and eye contact, accidental ingestion should be avoided
Signal word: None required under standard conditions, exercise caution anyway
Chronic symptoms: Repeated contact potentially causes dermatitis, respiratory irritation more likely in poorly ventilated spaces
Ingredient: Dibenzoyl-L-tartaric acid monohydrate
Concentration: Approx. 98-100% by weight
Impurities: Trace organic and inorganic synthesis byproducts below regulatory threshold
Other components: None intentionally added; hydrates present as labeled
Eye contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing
Skin contact: Wash affected area with plenty of soap and water, remove contaminated clothing, consult a physician if irritation develops
Inhalation: Move individual to fresh air, monitor for cough or breathing difficulty, consult medical help for persistent symptoms
Ingestion: Rinse mouth, drink water, do not induce vomiting, seek immediate medical advice for quantities above trace amount
Advice to physician: Treat symptoms, monitor airway and vital functions, symptomatic therapy as needed
Suitable extinguishing media: Carbon dioxide, dry powder, foam, water spray (avoid full jet to prevent spread of material)
Special hazards: Combustion releases carbon monoxide, carbon dioxide, and potentially irritating fumes
Protective equipment: Wear self-contained breathing apparatus and full protective suit during emergency response
Thermal decomposition: Avoid breathing combustion gases, move containers from area if safe
Personal precautions: Avoid raising dust, ventilate area, restrict access to qualified personnel
Environmental precautions: Prevent entry into waterways, drains, or soil, contain spill as soon as possible
Methods for cleaning up: Collect powders using vacuum with HEPA filter or damp sweeping, place in labeled waste containers, wash spill site after removal
Decontamination: Dispose cleaning materials in accordance with regulatory procedures, avoid use of pressurized air
Handling: Minimize dust formation, use in fume hood for long-duration handling, avoid direct contact with eyes, skin, and clothing
Storage conditions: Store tightly closed in cool, dry, well-ventilated place, protect from strong acids, bases, and oxidizers
Technical measures: Use grounded equipment if handling large quantities, maintain separation from incompatible materials
Storage class: General laboratory chemical (non-reactive), avoid food and drink areas
Engineering controls: Use local exhaust ventilation, chemical fume hood preferred
Personal protective equipment: Nitrile gloves, lab coat, safety goggles with side shields
Respiratory protection: Use dust mask (P2 or better) in absence of adequate ventilation
Environmental exposure: Minimize discharge to wastewater, ensure local regulations followed for emissions
Work hygiene: Do not eat, drink, or smoke near product, wash hands thoroughly after use
Appearance: White to off-white crystalline powder
Odor: Odorless or faint chemical odor
pH: Slightly acidic in aqueous suspension
Melting point: Approx. 196–201°C (anhydrous form varies; hydrate may shift)
Boiling point: Decomposes before boiling
Flash point: Not flammable under ambient laboratory conditions
Solubility: Soluble in alcohol, partially soluble in water
Vapor pressure: Negligible at room temperature
Density: Approx. 1.45–1.50 g/cm³
Partition coefficient: Not established for biological systems
Evaporation rate: Not applicable
Chemical stability: Stable at room temperature under normal storage and handling conditions
Incompatible materials: Strong bases, strong oxidizing agents, strong reducing agents
Decomposition products: Carbon oxides, organic acids under combustion
Reactivity: Not expected to polymerize, avoid contact with reactive chemicals
Hazardous reactions: No significant dangerous reactions in normal use
Acute toxicity: Low oral and dermal toxicity based on available data
Skin/eye irritation: May cause mild to moderate irritation following direct contact
Respiratory sensitization: Inhalation of dust can cause temporary irritation to mucous membranes
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, or OSHA
Mutagenicity: No mutagenicity data found in the literature
Repeated exposure: Prolonged or repeated exposure may cause eczema or allergic reactions in sensitized individuals
Target organ effects: No reports of system-specific toxicity under standard laboratory exposure conditions
Aquatic toxicity: No acute aquatic toxicity data, expect low environmental risk at small laboratory scales
Persistence and degradability: Biodegradable under standard environmental conditions
Bioaccumulation potential: Not expected to accumulate in aquatic organisms
Mobility in soil: Limited mobility; will generally adhere to soil particulates
Other effects: Prevent uncontrolled discharge to water systems, long-term impact data not available
Waste handling: Dispose of as chemical waste, in accordance with local, regional, and national laws
Empty containers: Rinse thoroughly before recycling or disposal, treat as hazardous unless decontaminated
Preferred methods: Incineration or chemical disposal in lined landfill following professional guidance
Avoid: Release into drains, surface waters, or open environment
UN Number: Not regulated under ADR, RID, IMDG, or IATA
Proper shipping name: Not classified as dangerous goods
Packaging group: Not assigned
Hazard class: Not considered hazardous for transport
Special precautions: Use sturdy containers, keep upright and labeled, avoid spills during transit
OSHA status: No specific Occupational Safety and Health Administration restriction
TSCA compliance: Listed or meets research exemption requirements
WHMIS classification: Not controlled product in Canada, basic lab safety applies
EU REACH: Exempt for research and development quantities or registered substance
Labeling requirements: Standard chemical label with substance name, hazard statement, precautionary statement, supplier information
Other regulations: Follow institutional and national chemical safety protocols for storage, handling, and disposal
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