Product Name: Dibenzoyl-L-tartaric Acid Anhydrous
Synonyms: L-(−)-Dibenzoyl tartaric acid, DBTA
Chemical Formula: C18H14O7
CAS Number: 32634-66-5
Recommended Use: Chiral reagent, resolving agent in research and manufacturing
Supplier Information: Chemical companies or laboratory supply houses provide detailed contact data
Emergency Phone Number: Provided by supplier on shipment packaging or safety documentation
Classification: Not classified as hazardous by GHS standards for most handling, but dust may cause irritation
GHS Label Elements: No pictogram required under standard conditions
Signal Word: No signal word assigned
Hazard Statements: Prolonged contact with dust can irritate skin, eyes, or the respiratory tract
Precautionary Statements: Avoid creating dust, wear eye and skin protection, use in well-ventilated areas
Other Hazards: Can be harmful if swallowed or inhaled in large quantities; long-term exposure data is lacking
Chemical Name: Dibenzoyl-L-tartaric acid anhydrous
CAS Number: 32634-66-5
Concentration: ≥99% purity typical for lab and industrial supply
Impurities: Trace residues of unreacted starting materials possible, usually less than 1%
Inhalation: Move exposed person to fresh air, monitor for breathing difficulty, seek medical attention if symptoms persist
Skin Contact: Wash thoroughly with soap and water, remove contaminated clothing and wash before reuse
Eye Contact: Hold eyelids open and flush eyes gently with plenty of water, continue rinsing for at least 15 minutes, consult physician if irritation develops
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical attention and provide product information
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, or water spray
Specific Hazards: Product can emit irritating fumes, carbon oxides under fire conditions
Protective Equipment for Firefighters: Wear self-contained breathing apparatus and full protective gear
Special Precautions: Avoid inhalation of combustion products, control runoff to prevent environmental contamination
Personal Precautions: Don gloves, goggles, and dust mask to avoid irritation or inhalation of dust
Environmental Precautions: Prevent product from entering drains, waterways, or soil
Methods for Cleaning Up: Gently sweep or scoop material, transfer to labeled container for disposal, ventilate affected area, avoid dust generation, clean surfaces with damp cloths
Safe Handling Practices: Use only with appropriate ventilation, minimize dust formation, keep away from incompatible materials like strong oxidizers
Storage Conditions: Store in tightly sealed containers, in a cool, dry, well-ventilated area, protected from light, moisture, and heat sources
Incompatibilities: Strong oxidizing agents may react violently with dibenzoyl-L-tartaric acid
Exposure Limits: Occupational exposure limits not established for this chemical
Engineering Controls: Use fume hood or local exhaust ventilation during handling
Personal Protective Equipment: Protective gloves (nitrile or latex), safety goggles, lab coat or apron, dust mask or particulate respirator
Hygiene Measures: Wash hands after handling, avoid eating, drinking, or smoking in areas where material is used
Appearance: White to off-white crystalline powder
Odor: Odorless or may have a faint characteristic smell
Molecular Weight: 342.30 g/mol
Melting Point: 197–202°C
Solubility: Soluble in ethanol, methanol, and acetone; slightly soluble in water
Boiling Point: Not determined (decomposes before boiling)
Density: Approximate bulk density ranges from 0.7 to 1.1 g/cm³
pH: Not applicable (insoluble in water)
Chemical Stability: Stable under normal temperatures and dry storage conditions
Potential Hazards: Can degrade with exposure to light, heat, or moisture, forming irritating or toxic fragments
Incompatibility: Strong oxidizing agents, strong bases
Hazardous Decomposition: Carbon monoxide, carbon dioxide, possibly benzoic acid under extreme heat
Polymerization: Polymerization not observed under standard conditions
Acute Toxicity: Data limited, likely low oral or dermal toxicity based on related organic acids
Chronic Effects: Not studied in depth; prolonged or repeated exposure to dust may irritate respiratory system or skin
Carcinogenicity: No classification from IARC, NTP, or OSHA
Other Health Hazards: May be a mild skin or eye irritant, possible allergen at high exposures
Symptoms Upon Exposure: Redness, coughing, sneezing, eye discomfort, rarely gastrointestinal upset if swallowed
Aquatic Toxicity: No specific data, but expected to be of low toxicity to aquatic life at normal laboratory levels
Persistence and Degradability: Biodegradable under environmental conditions over time, but may persist if spilled in large quantity
Bioaccumulation Potential: Unlikely to bioaccumulate significantly because of low solubility
Environmental Impact: Large accidental releases could alter local acidity, disrupt aquatic or plant growth
Waste Disposal Methods: Dispose of material in compliance with local, state, and national regulations, typically through a licensed chemical waste contractor
Container Disposal: Rinse and dispose of packaging as hazardous material unless thoroughly decontaminated
Precautions: Do not allow uncontrolled discharge to environment or municipal waste, control dust during disposal
UN Number: Not assigned
Proper Shipping Name: Not regulated for transport
Hazard Class: Non-hazardous for ground, air, and water shipment under normal conditions
Packing Group: Not assigned
Special Transport Precautions: Standard handling care to avoid breakage or dust generation
Inventory Status: Listed or exempted in most national and international chemical inventories
Regulation: Not subject to major transport or workplace regulations beyond good laboratory practice
OSHA: Not specifically regulated beyond nuisance dust controls
SARA Title III: Not listed as a hazardous or extremely hazardous substance
California Proposition 65: Not included on the Prop 65 list
Providing high-quality chemical products and logistics solutions for global trade partners.
