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NIOSH

AMMONIUM FLUORIDE

ICSC: 1223

Neutral ammonium fluoride
NH4F
Molecular mass: 37.0
ICSC # 1223 		CAS # 12125-01-8
RTECS # BQ6300000
UN # 2505
EC # 009-006-00-8
April 19, 2004 Validated

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

STORAGE

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.
Separated from incompatible materials , food and feedstuffs . See Chemical Dangers. Dry. Well closed.
Do not transport with food and feedstuffs.
T symbol
R: 23/24/25
S: 1/2-26-45
UN Hazard Class: 6.1
UN Packing Group: III
ICSC: 1223 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

AMMONIUM FLUORIDE

ICSC: 1223

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS OR WHITE POWDER.

PHYSICAL DANGERS:


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 glassandmetal.

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

Melting point: sublimes
Density: 1.01
g/cm3
Solubility in water, g/100 ml at 25°C: 45.3

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

Card has been partly updated in April 2005 and October 2005. See section Occupational Exposure Limits.
Transport Emergency Card: TEC (R)-61GT5-III

NFPA Code: H3; F0; R0;

ADDITIONAL INFORMATION



ICSC: 1223 AMMONIUM FLUORIDE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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