ICSC 1069 - POTASSIUM NITRITE

POTASSIUM NITRITE

ICSC: 1069
_{Peer-Review Status: 04.12.2000 Validated}

Nitrous acid potassium salt

CAS #: 7758-09-0 RTECS #: TT3750000
UN #: 1488
EC #: 007-011-00-X
EINECS #: 231-832-4

Formula: KNO₂
Molecular mass: 85.1

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.	NO contact with combustible substances.	In case of fire in the surroundings, use appropriate extinguishing media.
EXPLOSION			In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation	Cough. Sore throat. Headache. Blue lips, fingernails and skin. Nausea. Dizziness. Confusion. Laboured breathing. Convulsions. Unconciousness.	Use local exhaust or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	Redness.	Protective gloves.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again.
Eyes	Redness. Pain.	Wear safety goggles or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Vomiting. Increased heart rate. Fall in blood pressure. Further see Inhalation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT absorb in saw-dust or other combustible absorbents.	Airtight. EC Classification Symbol: O, T, N; R: 8-25-50; S: (1/2)-45-61 UN Classification UN Hazard Class: 5.1; UN Pack Group: II GHS Classification

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-51G02.	Fireproof. Provision to contain effluent from fire extinguishing. Separated from combustible substances, reducing agents and acids. Dry. Well closed.

IMPORTANT DATA

Physical State; Appearance
WHITE-TO-YELLOW DELIQUESCENT SOLID IN VARIOUS FORMS.

Physical dangers

Chemical dangers
May explode on heating above 530°C. Decomposes on contact with even weak acids. This produces toxic fumes of nitrogen oxides. The substance is a strong oxidant. It reacts with combustible and reducing materials. This generates fire and explosion hazard.

Occupational exposure limits
TLV (NOT-ESTABLISHED):.

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

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly.

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the cardiovascular system and blood. This may result in fall of blood pressure and formation of methaemoglobin. Exposure could cause death. The effects may be delayed. Medical observation is indicated.

Effects of long-term or repeated exposure

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Melting point: 441°C Density: 1.9 g/cm³ Solubility in water, g/100ml at 0°C: 281 (very good)	This substance may be hazardous to the environment. Special attention should be given to water quality and soil contamination.

NOTES

Decomposition of compound starts at 350°C.
Depending on the degree of exposure, periodic medical examination is indicated.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Rinse contaminated clothes (fire hazard) with plenty of water.

ADDITIONAL INFORMATION

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012

LEGAL NOTICE

Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

    See Also:
       Toxicological Abbreviations
       Potassium nitrite (FAO Nutrition Meetings Report Series 38a)
       POTASSIUM NITRITE (JECFA Evaluation)