Product Identification
【Product Name】Ammonium hypophosphite
【Synonyms】Ammonium phosphinate；次亚磷酸铵
【CAS】7803-65-8
【Formula】H6NO2P
【Molecular Weight】83.03
【EINECS】232-266-0
【Merck】12,559
【Beilstein/Gmelin】180889 (G)

Physical and Chemical Properties
【Appearance】White crystalline solid.
【Solubility in water】1 g/1 ml
【Melting Point】200
【Density】1.634 g/cm3
【Usage】Catalyst in polyamide mfr.

First Aid Measures
【Ingestion】The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
【Inhalation】Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 anist and corticosteroid aerosols.
【Skin】Treatment should include recommendations listed in the oral exposure section when appropriate.
【Eyes】If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage
【Storage】Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
【Handling】All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification
【Inhalation】Mucous membrane irritation, shortness of breath, cough, sputum production chest tightness, dyspnea, ards, and delayed onset of pulmonary edema may occur.
【Skin】Sweating and cyanosis have been seen.
【Eyes】Irritation of the mucous membranes may be noted.
【Ingestion】Nausea, vomiting, abdominal pain, and diarrhea may occur.

Exposure Controls/Personal Protection
【Personal Protection】Chemical splash ggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
【Respirators】Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
【Exposure Effects】Rapid heart rate and abnormally low blood pressure may occur. Dizziness, headache, fatigue, stupor, restlessness, ataxia, seizures, and coma may be noted. No data were available to assess the teratogenic potential of this agent.
Decreased egg production has occurred in experimental animals. Ammonia crosses the ovine placental barrier.
No data were available to assess the potential effects of exposure to this agent during lactation.
No information about possible male reproductive effects was found in available references.

Fire Fighting Measures
【Fire Fighting】Fire Extinguishing Agents: Carbon dioxide, dry chemical, or water spray
【Fire Potential】Decomposes when heated with evolution of phosphine which ignites spontaneously.

Accidental Release Measures
【Small spills/leaks】Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity
【Stability】No data.
【Combustion Products】Decomposes at 240 emitting phosphine and POx.