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AMMONIUM FLUORIDE ICSC: 1223
Date of Peer Review: April 2004

Neutral ammonium fluoride
CAS # 12125-01-8 NH4F
RTECS # BQ6300000 Molecular mass: 37.0
UN # 2505
EC Index # 009-006-00-8
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: water in large amounts to knock down acid vapors, then use appropriate extinguishing agent.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Face shield or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Diarrhoea. Nausea. Vomiting. Abdominal pain. Burning sensation. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into dry plastic containers. Carefully collect remainder, then remove to safe place. Personal protection: P3 filter respirator for toxic particles. Do NOT let this chemical enter the environment.
Do not transport with food and feedstuffs.
EU Classification
Symbol: T
R: 23/24/25
S: (1/2-)-26-45
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT5-III
NFPA Code: H3; F0; R0;
Separated from incompatible materials, food and feedstuffs. See Chemical Dangers. Dry. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
AMMONIUM FLUORIDE ICSC: 1223
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR WHITE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes including hydrogen fluoride and ammonia. The solution in water is a weak acid. Reacts with chlorine trifluoride causing explosion hazard. Attacks glass and metal.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as fluorine) 2.5 mg/m as TWA; A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2004).
MAK: (as F) (Inhalable fraction) 1 mg/m; Peak limitation category: I(4); skin absorption (H); Pregnancy risk group: C; (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract. Corrosive on ingestion.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the bones and teeth, resulting in fluorosis.
PHYSICAL PROPERTIES
Melting point: sublimes
Density: 1.01 g/cm
Solubility in water, g/100 ml at 25C: 45.3
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
Card has been partly updated in April 2005 and October 2005. See section Occupational Exposure Limits.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005