Product Identification
【Product Name】1H-Tetrazole-1-acetic acid
【Synonyms】四氮唑乙酸(TAA)
【CAS】21732-17-2
【Formula】C3H4N4O2
【Molecular Weight】128.09
【EINECS】244-551-7
【Beilstein/Gmelin】1210476
【Beilstein Reference】5-26-11-00065

Physical and Chemical Properties
【Solubility in water】Very soluble
【Melting Point】128-131
【pKa/pKb】2.67 (pKa)

First Aid Measures
【Ingestion】Seek medical assistance.
【Inhalation】Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
【Skin】Remove and isolate contaminated clothing and shoes. Flush with running water for at least 20 minutes.
【Eyes】Flush with running water for at least 20 minutes.

Hazards Identification
【Inhalation】May cause irritation.
【Skin】See inhalation.
【Eyes】See inhalation.
【Hazards】May explode and throw fragments 500 meters or more if fire reaches car.
【UN (DOT)】407

Exposure Controls/Personal Protection
【Personal Protection】Wear appropriate protective gloves, clothing and ggles.
【Respirators】Wear positive pressure self-contained breathing apparatus (SCBA).

Fire Fighting Measures
【Fire Fighting】Use plenty of water - FLOOD it! If water is not available, use carbon dioxide, dry chemical or dirt.

Accidental Release Measures
【Small spills/leaks】Make no contact with the spilled material. ELIMINATE ignition sources and ground all equipment. DO NOT OPERATE RADIO TRANSMITTERS WITHIN 100 meters OF ELECTRIC DETONATORS. DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.

Transport Information
【UN Number】407
【Hazard Class】1.4C
【Packing Group】II

Stability and Reactivity
【Combustion Products】Fire may produce irritating, corrosive and/or toxic gases.