SIGMA-ALDRICH
MATERIAL SAFETY DATA SHEET
Date Printed: 03/19/2005
Date Updated: 11/09/2004
Version 1.10
Section 1 - Product and Company Information
Product Name SODIUM HYDROXIDE, PELLETS, 97+%,
A.C.S. REAGENT
Product Number 221465
Brand ALDRICH
Company Sigma-Aldrich
Street Address 3050 Spruce Street
City, State, Zip, Country SAINT LOUIS MO 63103 US
Technical Phone: 314 771 5765
Emergency Phone: 414 273 3850 Ext. 5996
Fax: 800 325 5052
Section 2 - Composition/Information on Ingredient
Substance Name CAS # SARA 313
SODIUM HYDROXIDE 1310-73-2 No
Formula NaOH
Synonyms Caustic soda * Hydroxyde de sodium (French) *
Lewis-red devil lye * Natriumhydroxid (German) *
Natriumhydroxyde (Dutch) * Soda lye *
Sodio(idrossido di) (Italian) * Sodium hydrate *
Sodium hydroxide (ACGIH:OSHA) * Sodium(hydroxyde
de) (French) * White caustic
RTECS Number: WB4900000
Section 3 - Hazards Identification
EMERGENCY OVERVIEW
Corrosive.
Causes severe burns.
Exothermic in contact with water
HMIS RATING
HEALTH: 3
FLAMMABILITY: 0
REACTIVITY: 2
SPECIAL HAZARD(S): Water reactive
NFPA RATING
HEALTH: 3
FLAMMABILITY: 0
REACTIVITY: 2
SPECIAL HAZARD(S): Water reactive
For additional information on toxicity, please refer to Section 11.
Section 4 - First Aid Measures
ORAL EXPOSURE
If swallowed, wash out mouth with water provided person is
conscious. Call a physician immediately. Do not induce vomiting.
INHALATION EXPOSURE
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.
DERMAL EXPOSURE
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.
EYE EXPOSURE
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.
Section 5 - Fire Fighting Measures
EXPLOSION DATA
Sensitivity to Mechanical Impact: Contact with aluminum, tin and
zinc liberates hydrogen gas. Contact with nitromethane and other
similar nitro compounds causes formation of shock-sensitive
salts.
FLASH POINT
N/A
AUTOIGNITION TEMP
N/A
FLAMMABILITY
N/A
EXTINGUISHING MEDIA
Suitable: Use extinguishing media appropriate to surrounding
fire conditions.
Unsuitable: Do not use water.
FIREFIGHTING
Protective Equipment: Wear self-contained breathing apparatus
and protective clothing to prevent contact with skin and eyes.
Specific Hazard(s): Emits toxic fumes under fire conditions.
Section 6 - Accidental Release Measures
PROCEDURE 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
Sweep up, place in a bag and hold for waste disposal. Ventilate
area and wash spill site after material pickup is complete.
Section 7 - Handling and Storage
HANDLING
User Exposure: Do not breathe dust. Do not get in eyes, on skin,
on clothing. Avoid prolonged or repeated exposure.
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STORAGE
Suitable: Keep tightly closed. Store in a cool dry place.
Incompatible Materials: Do not allow contact with water
Section 8 - Exposure Controls / PPE
ENGINEERING CONTROLS
Safety shower and eye bath. Use only in a chemical fume hood.
PERSONAL PROTECTIVE EQUIPMENT
Respiratory: Government approved respirator.
Hand: Compatible chemical-resistant gloves.
Eye: Chemical safety goggles.
GENERAL HYGIENE MEASURES
Wash contaminated clothing before reuse. Discard contaminated
shoes. Wash thoroughly after handling.
EXPOSURE LIMITS, RTECS
Country Source Type Value
USA ACGIH Ceiling co2 MG/M3
USA MSHA Standard Ceiling co2 MG/M3
USA OSHA. PEL 8H TWA 2 MG/M3
New Zealand OEL
Remarks: check ACGIH TLV
USA NIOSH Ceiling co2 MG/M3/15M
EXPOSURE LIMITS
Country Source Type Value
Poland USA OSHA. NDS PEL 2 mg/m3
Poland USA ACGIH NDSCh TLV 0.5 MG/M3
2 mg/m3
Poland NDSP 1 MG/M3
Section 9 - Physical/Chemical Properties
Appearance Physical State: Solid
Color: White
Form: Pellets
Property Value At Temperature or Pressure
Molecular Weight 40 AMU
pH 13 - 14
BP/BP Range 1,390 掳C
MP/MP Range 318 掳C
Freezing Point N/A
Vapor Pressure < 18 mmHg 20 掳C
Vapor Density > 1 g/l
Saturated Vapor Conc. N/A
SG/Density 2.13 g/cm3
Bulk Density 2.13 kg/l
Odor Threshold N/A
Volatile% N/A
VOC Content N/A
Water Content N/A
Solvent Content N/A
Evaporation Rate N/A
Viscosity N/A
Surface Tension N/A
Partition Coefficient N/A
Decomposition Temp. N/A
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Flash Point N/A
Explosion Limits N/A
Flammability N/A
Autoignition Temp N/A
Refractive Index N/A
Optical Rotation N/A
Miscellaneous Data N/A
Solubility N/A
N/A = not available
Section 10 - Stability and Reactivity
STABILITY
Stable: Stable.
Conditions of Instability: Absorbs carbon dioxide from air. Heat
of solution is very high, and with limited amounts of water,
violent boiling may occur Never add water to this material, always
add this material to water
Conditions to Avoid: Do not allow water to enter container because
of violent reaction.
Materials to Avoid: Strong oxidizing agents, Strong acids, Organic
materials.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Sodium/sodium oxides.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
Section 11 - Toxicological Information
ROUTE OF EXPOSURE
Skin Contact: Causes burns.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes burns.
Inhalation: Material is extremely destructive to the tissue of
the mucous membranes and upper respiratory tract. May be harmful
if inhaled.
Ingestion: May be harmful if swallowed.
SIGNS AND SYMPTOMS OF EXPOSURE
Inhalation may result in spasm, inflammation and edema of the
larynxand bronchi, chemical pneumonitis, and pulmonary edema.
Symptoms of exposure may include burning sensation, coughing,
wheezing, laryngitis, shortness of breath, headache, nausea, and
vomiting. Material is extremely destructive to tissue of the
mucous membranes and upper respiratory tract, eyes, and skin. To
the best of our knowledge, the chemical, physical, and
toxicological properties have not been thoroughly investigated.
TOXICITY DATA
Intraperitoneal
Mouse
40 MG/KG
LD50
IRRITATION DATA
Skin
Rabbit
500 mg
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24 HR
Remarks: Severe irritation effect
Eyes
Rabbit
0.5 mg
24 HR
Remarks: Severe irritation effect
Eyes
Monkey
1%
24H
Remarks: Severe irritation effect
Skin
Rabbit
500 mg
24H
Remarks: Severe irritation effect
Eyes
Rabbit
0.4 mg
Remarks: Mild irritation effect
Eyes
Rabbit
1%
Remarks: Severe irritation effect
Eyes
Rabbit
0.05 mg
24H
Remarks: Severe irritation effect
Eyes
Rabbit
1 mg
24H
Remarks: Severe irritation effect
Eyes
Rabbit
1 mg
30S
Remarks: Rinsed
CHRONIC EXPOSURE - MUTAGEN
Species: Hamster
Dose: 10 MMOL/L
Cell Type: lung
Mutation test: Cytogenetic analysis
Species: Hamster
Dose: 16 MMOL/L
Cell Type: ovary
Mutation test: Cytogenetic analysis
Section 12 - Ecological Information
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No data available.
Section 13 - Disposal Considerations
APPROPRIATE METHOD OF DISPOSAL OF SUBSTANCE OR PREPARATION
Contact a licensed professional waste disposal service to dispose
of this material. Observe all federal, state, and local
environmental regulations.
Section 14 - Transport Information
DOT
Proper Shipping Name: Sodium hydroxide, solid
UN#: 1823
Class: 8
Packing Group: Packing Group II
Hazard Label: Corrosive
PIH: Not PIH
IATA
Proper Shipping Name: Sodium hydroxide, solid
IATA UN Number: 1823
Hazard Class: 8
Packing Group: II
Section 15 - Regulatory Information
EU DIRECTIVES CLASSIFICATION
Symbol of Danger: C
Indication of Danger: Corrosive.
R: 35
Risk Statements: Causes severe burns.
S: 26 37/39 45
Safety Statements: In case of contact with eyes, rinse
immediately with plenty of water and seek medical advice. Wear
suitable gloves and eye/face protection. In case of accident or
if you feel unwell, seek medical advice immediately (show the
label where possible).
US CLASSIFICATION AND LABEL TEXT
Indication of Danger: Corrosive.
Risk Statements: Causes severe burns.
Safety Statements: In case of contact with eyes, rinse
immediately with plenty of water and seek medical advice. Wear
suitable protective clothing, gloves, and eye/face protection.
In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
US Statements: Exothermic in contact with water
UNITED STATES REGULATORY INFORMATION
SARA LISTED: No
TSCA INVENTORY ITEM: Yes
CANADA REGULATORY INFORMATION
WHMIS Classification: This product has been classified in
accordance with the hazard criteria of the CPR, and the MSDS
contains all the information required by the CPR.
DSL: Yes
NDSL: No
Section 16 - Other Information
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DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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.
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