International Chemical Safety Cards

SODIUM NITRITE ICSC: 1120

SODIUM NITRITE
Nitrous acid, sodium salt
NaNO2
Molecular mass: 69.0
CAS # 7632-00-0
RTECS # RA1225000
ICSC # 1120
UN # 1500
EC # 007-010-00-4
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.
Water in large amounts, powder, water spray, foam, carbon dioxide. In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION

In case of fire: keep drums, etc., cool by spraying with water.
 
EXPOSURE
PREVENT DISPERSION OF DUST!

INHALATION Blue lips or finger nails. Blue skin. Cough. Dizziness. Headache. Laboured breathing. Unconsciousness.
Local exhaust or breathing protection.
Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
SKIN MAY BE ABSORBED! Redness (further see Inhalation).
Protective gloves. Protective clothing.
First rinse with plenty of water, then remove contaminated clothes and rinse again. Wear protective gloves when administering first aid.
EYES Redness.
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 take to a doctor.
INGESTION Abdominal pain. Blue lips or fingernails. Blue skin. Diarrhoea. Dizziness. Headache. Laboured breathing. Unconsciousness. Vomiting. Rapid pulse. Rapid drop in blood pressure.
Do not eat, drink, or smoke during work.
Do NOT induce vomiting. Give nothing to drink. Refer for medical attention.
SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT absorb in saw-dust or other combustible absorbents (extra personal protection: self-contained breathing apparatus).
Fireproof. Separated from combustible and reducing substances, acids. Cool. Dry. Well closed.
Airtight.
O symbol
T symbol
R: 8-25
S: 44
UN Hazard Class: 5.1
UN Packing Group: III
SEE IMPORTANT INFORMATION ON BACK
ICSC: 1120 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

SODIUM NITRITE ICSC: 1120

I
M
P
O
R
T
A
N
T

D
A
T
A
PHYSICAL STATE; APPEARANCE:
HYGROSCOPIC, WHITE TO YELLOW SOLID IN VARIOUS FORMS.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
May explode on heating above 530°C. The substance decomposes on contact with even weak acids producing toxic fumes (nitrogen oxides). The substance is a strong oxidant and reacts with combustible and reducing materials causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.


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 irritates the eyes, the skin, and the respiratory tract. The substance may cause effects on the blood and nervous system , resulting in fall in blood pressure, relieve of smooth muscle spasm, visual disturbances, formation of methaemoglobin. Exposure may result in death. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
PHYSICAL
PROPERTIES
 Decomposes below boiling point at 320°C
Melting point: 271°C
 Relative density (water = 1): 2.17
Solubility in water: good (82 g/100 ml at 20°C)
ENVIRONMENTAL
DATA
 This substance may be hazardous to the environment; special attention should be given to water and soil.
NOTES
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.
Transport Emergency Card: TEC (R)-608
ADDITIONAL INFORMATION


ICSC: 1120 SODIUM NITRITE
© IPCS, CEC, 1993
IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.