SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 11/MAY/2005
Date Updated: 13/MAR/2004
Version 1.5
According to 91/155/EEC
Classified as Hazardous according to the criteria of EU Annex 1 and
NOHSC.
1 - Product and Company Information
Product Name POTASSIUM NITRITE, 96+%, A.C.S. REAGENT
Product Number 310484
Company Sigma-Aldrich Pty, Ltd
Unit 2, 14 Anella Avenue
Castle Hill NSW 1765
Australia
Technical Phone # +61 2 9841 0555
Fax +61 2 9841 0500
Emergency Phone # +61 2 9841 0566
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
POTASSIUM NITRITE 7758-09-0 231-832-4 007-011-00-X
Formula KNO2
Molecular Weight 85.11 AMU
Synonyms Nitrous acid, potassium salt
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Contact with combustible material may cause fire. Toxic if
swallowed. Very toxic to aquatic organisms.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If breathing becomes difficult,
call a physician.
AFTER SKIN CONTACT
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.
AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician.
5 - Fire Fighting Measures
EXTINGUISHING MEDIA
Suitable: Carbon dioxide, dry chemical powder, or appropriate
foam.
SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.
Contact with other material may cause fire. May accelerate
combustion.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
6 - Accidental Release Measures
PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area.
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear self-contained breathing apparatus, rubber boots, and heavy
rubber gloves.
METHODS FOR CLEANING UP
Ventilate area and wash spill site after material pickup is
complete. Cover with dry lime or soda ash, pick up, keep in a
closed container, and hold for waste disposal.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Do not get in eyes, on skin, on
clothing.
STORAGE
Conditions of Storage: Keep tightly closed. Keep away from
combustible materials, heat, sparks, and open flame.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Use only in a chemical fume hood. Safety shower and eye bath.
GENERAL HYGIENE MEASURES
Wash thoroughly after handling. Remove and wash contaminated
clothing promptly. Discard contaminated shoes.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.
9 - Physical and Chemical Properties
Appearance Color: Faintly yellow
Form: Fine crystals
Property Value At Temperature or Pressure
pH 7 - 10
BP/BP Range N/A
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MP/MP Range 350 掳C
Flash Point N/A
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits N/A
Vapor Pressure N/A
SG/Density 1.915 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density N/A
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density 980 kg/l
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility N/A
10 - Stability and Reactivity
STABILITY
Materials to Avoid: Strong reducing agents, Finely powdered
metals, Strong acids.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Nitrogen oxides.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: TT3750000
ACUTE TOXICITY
LC50
Inhalation
Mouse
85,000 mg/m3
2H
Remarks: Behavioral:Sleep. Behavioral:Excitement.
Behavioral:Muscle contraction or spasticity.
LD50
Oral
Rabbit
200 mg/kg
SIGNS AND SYMPTOMS OF EXPOSURE
Produces methemoglobin, nausea, vomiting, rapid pulse, headache,
and visual disturbances. To the best of our knowledge, the
chemical, physical, and toxicological properties have not been
thoroughly investigated.
ROUTE OF EXPOSURE
Skin Contact: May cause skin irritation.
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Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: May cause eye irritation.
Inhalation: May be harmful if inhaled. Material may be
irritating to mucous membranes and upper respiratory tract.
Ingestion: Toxic if swallowed.
CHRONIC EXPOSURE - REPRODUCTIVE HAZARD
Species: Rat
Dose: 30 GM/KG
Route of Application: Oral
Exposure Time: (60D MALE/60D PRE)
Result: Effects on Fertility: Female fertility index (e.g., #
females pregnant per # sperm positive females; # females
pregnant per # females mated ).
Species: Guinea pig
Dose: 137 GM/KG
Route of Application: Oral
Exposure Time: (18W PRE)
Result: Effects on Newborn: Stillbirth.
Species: Guinea pig
Dose: 201 GM/KG
Route of Application: Oral
Exposure Time: (19W PRE)
Result: Effects on Fertility: Abortion. Effects on Embryo or
Fetus: Other effects to embryo.
12 - Ecological Information
ECOTOXICOLOGICAL EFFECTS
Test Type: LC50 Fish
Species: Brachydanio rerio
Time: 96 h
Value: 620 mg/l
Test Type: EC50 Daphnia
Species: Daphnia magna
Time: 48 h
Value: 215 mg/l
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. Observe all federal, state, and local
environmental regulations.
14 - Transport Information
RID/ADR
UN#: 1488
Class: 5.1
PG: II
Proper Shipping Name: Potassium nitrite
IMDG
UN#: 1488
Class: 5.1
PG: II
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Proper Shipping Name: Potassium nitrite
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 1488
Class: 5.1
PG: II
Proper Shipping Name: Potassium nitrite
Inhalation Packing Group I: No
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
ANNEX I INDEX NUMBER: 007-011-00-X
INDICATION OF DANGER: O T N
Oxidizing. Toxic. Dangerous for the environment.
R-PHRASES: 8 25 50
Contact with combustible material may cause fire. Toxic if
swallowed. Very toxic to aquatic organisms.
S-PHRASES: 45 61
In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible). Avoid release to
the environment. Refer to special instructions/safety data
sheets.
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 2
SWITZERLAND
SWISS POISON CLASS: 2
16 - Other Information
WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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