SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 14/APR/2005
Date Updated: 13/MAR/2004
Version 1.3
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 CHLOROSULFONIC ACID, 99%
Product Number 571024
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
CHLOROSULFONIC ACID 7790-94-5 232-234-6 016-017-00-1
Formula ClHO3S
Molecular Weight 116.52 AMU
Synonyms Chlorosulfonic acid * Monochlorosulfuric acid *
Sulfonic acid, monochloride * Sulfuric
chlorohydrin
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Reacts violently with water. Causes severe burns. Irritating to
respiratory system.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.
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. Do not induce vomiting.
5 - Fire Fighting Measures
CONDITIONS OF FLAMMABILITY
Reacts with metals to liberate flammable hydrogen gas. Reacts
with water to liberate flammable and/or explosive gas.
EXTINGUISHING MEDIA
Suitable: Carbon dioxide, dry chemical powder, or appropriate
foam.
Unsuitable: Do not use water.
SPECIAL RISKS
Specific Hazard(s): Emits toxic fumes under fire conditions.
Water reactive material.
Explosion Hazards: Container explosion may occur under fire
conditions.
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
Cover with dry lime or soda ash, pick up, keep in a closed
container, and hold for waste disposal. Ventilate area and wash
spill site after material pickup is complete.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Do not breathe vapor. Do not get
in eyes, on skin, on clothing. Avoid prolonged or repeated
exposure.
STORAGE
Conditions of Storage: Keep tightly closed. Store in a cool dry
place.
Unsuitable: Do not allow water to enter container.
Incompatible Materials: Do not allow contact with water Avoid
contact with metals.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Use only in a chemical fume hood.
GENERAL HYGIENE MEASURES
Wash contaminated clothing before reuse. Discard contaminated
shoes. Wash thoroughly after handling.
EXPOSURE LIMITS - UNITED KINGDOM
Source Type Value
ALDRICH - 571024 www.sigma-aldrich.com Page 2
OEL OEL 1 mg/m3
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.
Special Protective Measures: Faceshield (8-inch minimum).
9 - Physical and Chemical Properties
Appearance Physical State: Liquid
Property Value At Temperature or Pressure
pH N/A
BP/BP Range 151 - 152 掳C 755 mmHg
MP/MP Range N/A
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 1 mmHg 25 掳C
SG/Density 1.745 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density 4 g/l
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility Solubility in Water:Soluble.
10 - Stability and Reactivity
STABILITY
Stable: Stable.
Materials to Avoid: Strong oxidizing agents, Water, Alcohols,
Acids, Metals.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Sulfur oxides, Hydrogen chloride
gas.
Hazardous Decomposition Products Formed Upon Contact with Water:
Sulfuric acid Hydrochloric acid
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: FX5730000
ACUTE TOXICITY
LC50
Inhalation
ALDRICH - 571024 www.sigma-aldrich.com Page 3
Rat
38.5 mg/m3
4H
LD50
Oral
Rat
50 mg/kg
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Cyanosis. Skin and Appendages:
Other: Hair.
LD50
Inhalation
Rat
4,779 mg/m3
4H
Remarks: Behavioral:Somnolence (general depressed activity).
Behavioral:Ataxia. Lungs, Thorax, or Respiration:Dyspnea.
SIGNS AND SYMPTOMS OF EXPOSURE
Material is extremely destructive to tissue of the mucous
membranes and upper respiratory tract, eyes, and skin.
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.
ROUTE OF EXPOSURE
Skin Contact: Causes severe burns.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes severe burns.
Inhalation: Material is extremely destructive to the tissue of
the mucous membranes and upper respiratory tract. May be fatal
if inhaled.
Ingestion: May be fatal if swallowed.
12 - Ecological Information
No data available.
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. Dissolve or mix the material with a combustible
solvent and burn in a chemical incinerator equipped with an
afterburner and scrubber. Observe all federal, state, and local
environmental regulations.
14 - Transport Information
RID/ADR
UN#: 1754
Class: 8
PG: I
Proper Shipping Name: Chlorosulphonic acid
IMDG
UN#: 1754
Class: 8
ALDRICH - 571024 www.sigma-aldrich.com Page 4
PG: I
Proper Shipping Name: Chlorosulphonic acid
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 1754
Class: 8
PG: I
Proper Shipping Name: Chlorosulphonic acid
Inhalation Packing Group I: Yes
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
ANNEX I INDEX NUMBER: 016-017-00-1
INDICATION OF DANGER: C
Corrosive.
R-PHRASES: 14 35 37
Reacts violently with water. Causes severe burns. Irritating to
respiratory system.
S-PHRASES: 26 45
In case of contact with eyes, rinse immediately with plenty of
water and seek medical advice. In case of accident or if you
feel unwell, seek medical advice immediately (show the label
where possible).
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 1
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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