Product Name: Pyrotartaric Anhydride
Chemical Name: 3,4-Dihydro-2,5-furandione
Synonyms: Glutaric anhydride
CAS Number: 626-86-8
Manufacturer: Listed supplier’s details and emergency contact
Recommended Uses: Laboratory reagent, intermediates in organic synthesis
Restrictions: Not intended for household or food use
GHS Classification: Skin irritation (Category 2), Serious eye damage (Category 1), Specific target organ toxicity – single exposure (respiratory tract irritation, Category 3)
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, causes serious eye damage, may cause respiratory irritation
Precautionary Statements: Avoid breathing dust, use only outdoors or in well-ventilated area, wear protective gloves/protective clothing/eye protection/face protection
Hazard Pictograms: Corrosive, Exclamation mark
Chemical Identity: Pyrotartaric anhydride
CAS Number: 626-86-8
Pct. by Weight: 99% or greater
Impurities: Less than 1%, including trace organic acids and potential volatile organic compounds
Inhalation: Move person to fresh air. Seek medical attention for symptoms like coughing, shortness of breath, or wheezing.
Skin Contact: Remove contaminated clothing and wash skin thoroughly with soap and water. Seek medical help for irritation or burns. Wash any contaminated clothing before reuse.
Eye Contact: Rinse cautiously with water for at least 15 minutes, lifting eyelids, and remove contact lenses if present and easy to do. Call a physician without delay.
Ingestion: Rinse mouth thoroughly with water; never give anything by mouth to an unconscious person. Seek urgent medical attention. Do not attempt to induce vomiting.
Suitable Extinguishing Media: Dry chemical, CO2, foam, or water spray
Specific Hazards: During combustion, emits irritating and toxic fumes, including oxides of carbon
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective clothing
Special Procedures: Cool containing vessels with water spray. Remove containers from fire area if it can be done safely.
Personal Precautions: Use personal protective equipment, avoid dust formation, avoid breathing dust
Environmental Precautions: Prevent entry into sewers, waters, or soil
Cleanup Methods: Collect spilled material using inert absorbent, place in suitable, sealed containers for disposal. Ventilate affected area thoroughly. Wash spill site after material pickup is complete.
Safe Handling: Avoid contact with skin, eyes, and clothing. Minimize dust generation and accumulation. Use only with adequate ventilation. Do not eat, drink, or smoke while handling.
Proper Storage: Keep containers tightly closed, in a cool, dry, and well-ventilated place. Store away from moisture, acids, bases, oxidizers, and incompatible materials. Label containers clearly. Limit access to trained personnel.
Occupational Exposure Limits: No specific limits established for pyrotartaric anhydride, but control exposure to lowest feasible level
Engineering Controls: Use local exhaust ventilation or other engineering controls to maintain airborne levels below recommended limits
Personal Protection: Safety goggles or face shield, lab coat, nitrile or neoprene gloves, and suitable respiratory protection if exposure potential is significant
Hygiene Measures: Wash hands thoroughly after handling. Do not eat, drink, or smoke during use. Remove contaminated clothing and launder before reuse.
Appearance: White to off-white crystalline powder
Odor: Slight characteristic odor
Odor Threshold: Not established
pH: Not available
Melting Point: 54–57°C (129–135°F)
Boiling Point: 276°C (529°F) at 760 mmHg
Flash Point: Over 110°C (230°F)
Evaporation Rate: Not determined
Flammability: May be combustible at high temperatures
Vapor Pressure: Very low at room temperature
Vapor Density: Not established
Relative Density: 1.37–1.41 g/cm3
Solubility: Slowly reacts with water, slightly soluble
Partition Coefficient (n-octanol/water): Not measured
Decomposition Temperature: Not firmly established
Viscosity: Not applicable
Chemical Stability: Stable under recommended storage conditions; sensitive to moisture and hydrolyzes upon contact with water
Possible Reactions: Reacts with strong bases, acids, oxidizers, and amines; hydrolyzes to corresponding acid in presence of water
Hazardous Decomposition Products: Irritating or toxic fumes such as carbon monoxide and carbon dioxide
Conditions to Avoid: Moisture, heat, sparks, open flame, incompatible substances
Likely Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Effects: Causes irritation and burns to skin, eyes, and mucous membranes; inhalation may cause upper respiratory tract irritation
Chronic Effects: Long-term exposure may damage tissues and cause allergic sensitization in rare cases
Toxicity Data: LD50 (oral, rat): Not well documented; data from structurally related anhydrides suggest moderate toxicity
Symptoms: Redness, pain, severe skin or eye irritation, possible breathing difficulties
Carcinogenicity: Not listed as a known carcinogen by major regulatory agencies
Mutagenicity and Teratogenicity: No data available
Aquatic Toxicity: Not thoroughly investigated, but hydrolyzed product is organic acid; potential for pH shift in local water bodies
Persistence and Degradability: Hydrolyzes and degrades in presence of moisture; not expected to persist as parent compound
Bioaccumulation Potential: Low, based on molecular characteristics and anticipated rapid breakdown
Soil Mobility: May migrate through soils after hydrolysis to acids
Other Adverse Effects: No known specific impacts beyond pH effects and temporary irritation to aquatic and terrestrial organisms
Waste Treatment Methods: Incinerate according to local, regional, and national regulations, ensuring complete combustion and management of combustion gases
Disposal of Packaging: Decontaminate before recycling or disposal; dispose of in accordance with all applicable regulations
Precautions: Avoid release to the environment and uncontrolled discharge; consult with licensed waste contractor for large quantities
UN Number: UN 3261 (Corrosive solid, acidic, organic, n.o.s.; includes pyrotartaric anhydride)
Shipping Name: Corrosive solid, acidic, organic, n.o.s.
Hazard Class: 8 (Corrosive)
Packing Group: II
Marine Pollutant: Not classified
Label Requirements: Corrosive label, proper UN code and product identifiers on outer packages
Special Transport Precautions: Protect containers against physical damage, keep separated from food and feedstuffs, transport with required documentation
TSCA Status (United States): Listed
DSL/NDSL (Canada): Listed
REACH Status (EU): Registered or exempted
OSHA Hazard: Classified as hazardous
SARA Title III (Sections 302/304/313): Not subject to threshold reporting
California Proposition 65: Not listed
WHMIS (Canada): D2B (Skin/Eye Irritant), E (Corrosive Material)
Other International Regulations: Subject to specific national and local handling, labeling, and exposure requirements
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