ICSC 1223 - AMMONIUM FLUORIDE

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AMMONIUM FLUORIDE

ICSC: 1223
_{April 2004}

Neutral ammonium fluoride

CAS No: 12125-01-8
RTECS No: BQ6300000
UN No: 2505
EC No: 009-006-00-8

NH₄F
Molecular mass: 37.0

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.	T Symbol R: 23/24/25 S: (1/2-)26-45 UN Hazard Class: 6.1 UN Pack Group: III	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE 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.

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/m³ as TWA; A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2004).
MAK: (as F) (Inhalable fraction) 1 mg/m³; 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 20°C.

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	ENVIRONMENTAL DATA
Melting point: sublimes Density: 1.01 g/cm³ Solubility in water, g/100 ml at 25°C: 45.3	The substance is harmful to aquatic organisms.

NOTES

Card has been partly updated in April 2005 and October 2005. See section Occupational Exposure Limits.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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