ICSC:NENG1255 International Chemical Safety Cards (WHO/IPCS/ILO)

Perchloric acid, ammonium salt
NH₄ClO₄
Molecular mass: 117.5

ICSC #    1255
CAS #     7790-98-9
RTECS # SC7520000
UN #        1442
EC #         017-009-00-0

Types of Hazard/ Exposure	Acute Hazards/ Symptoms	Prevention	First Aid/ Fire Fighting
FIRE	Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire. See Notes.	NO contact with combustibles, reducing agents and organic materials.	In case of fire in the surroundings: water in large amounts, water spray.
Explosion	Risk of fire and explosion, see Chemical Dangers.	Do NOT expose to heat, friction or shock.	In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.

Exposure		PREVENT DISPERSION OF DUST!
•Inhalation	Cough.	Local exhaust or breathing protection.	Fresh air, rest.
•Skin	Redness. Pain.	Protective gloves. Protective clothing.	First rinse with plenty of water, then remove contaminated clothes and rinse again.
•Eyes	Redness. Pain.	Safety goggles, 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	Burning sensation. Nausea. Vomiting. Diarrhoea.	Do not eat, drink, or smoke during work.	Rinse mouth. Give one or two glasses of water to drink.

Spillage Disposal

Storage

Packaging & Labelling

Evacuate danger area! Consult an expert! Personal protection: P2 filter respirator for harmful particles. Moisten first, then sweep spilled substance into covered containers, then remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents. Do NOT let this chemical enter the environment.

Fireproof. Separated from combustible and reducing substances, and metals . See Chemical Dangers. Well closed.

Note: G
O symbol
R: 9-44
S: 2-14-16-27-36/37
UN Hazard Class: 5.1
UN Packing Group: II

Important Data

Physical State; Appearance:
WHITE HYGROSCOPIC CRYSTALS

Physical Dangers:

Chemical Dangers:
May decompose explosively on shock, friction, or concussion. and on heating. The substance is a strong oxidant and reacts violently with combustible and reducing materials and metals , producing toxic and corrosive fumes , including ammonia and hydrogen chloride , causing fire and explosion hazard.

Occupational Exposure Limits:
TLV not established.
MAK not established.

Routes of Exposure:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

Inhalation Risk:
A harmful concentration of airborne particles can be reached quickly when dispersed

Effects of Short-Term Exposure:
The aerosol is irritating to the eyes , the skin and the respiratory tract.

Effects of Long-Term or Repeated Exposure:
The substance may have effects on the thyroid , resulting in reduced levels of thyroid hormones.

Physical
Properties

Decomposes at >200 °C
(See Notes)
Density: 1.95
g/cm³

Solubility in water, g/100 ml at 25°C: 20

Environmental
Data

This substance may be hazardous in the environment; special attention should be given to crustacea.

N O T E S

Different decomposition temperatures are given in the literature. Unstabilized substance may explode on heating. Health effects of exposure to the substance have not been investigated adequately. Rinse contaminated clothes (fire hazard) with plenty of water.

Transport Emergency Card: TEC (R)-51S1442

NFPA Code: H1; F0; R4
Card has been partially updated in January 2008: see Physical Properties.

ADDITIONAL INFORMATION

ICSC: 1255	AMMONIUM PERCHLORATE
(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.