Material Safety Data Sheet
Revision Issued: 3/02/2010 Supercedes: 4/19/2005 First Issued: 10/03/1996
Section I - Chemical Product And Company Identification
Product Name: Sodium Bisulfite
CAS Number: 7631-90-5 HBCC MSDS No. CS05200
1675 No. Main Street, Orange, California 92867
Telephone No: 714-998-8800 | Chemtrec: 800-424-9300
Section II - Composition/Information On Ingredients
Chemical Name CAS Number %
Sodium Bisulfite 7631-90-5 28-43
See Section VIII for exposure guidelines
Section III - Hazard Identification
Routes of Exposure: Eyes, skin, inhalation, and ingestion
Summary of Acute Health Hazards
Ingestion: This product may cause irritation to the gastro-intestinal tract. Large
doses may cause diarrhea, Central Nervous System Depression colic and death. May
also cause severe allergic reaction in some asthmatics and sulfite sensitive
individuals.
Inhalation: If mists or sprays of this solution are inhaled, this product may cause
irritation to respiratory tract. May cause allergic reaction in sensitive individuals. If
mixed with acids, sodium bisulfite will release large amounts of sulfur dioxide gas.
This gas can cause severe irritation of the nose and throat. Exposure to high levels of
sulfur dioxide gas may result in severe lung damage.
Skin: Can cause burns and severe irritation to the skin and mucous membranes.
Eyes: Can cause severe irritation to the eyes.
Summary of Chronic Health Hazards: N/A
Signs and Symptoms of Exposure: Acute: This material is an irritant to eyes,
skin, and mucous membranes. Inhalation of mist may cause irritation to respiratory
tract. Ingestion may cause irritation to the gastrointestinal tract. Large doses may
cause diarrhea, depression, colic and death. May also cause severe allergic reaction
in some asthmatics and sulfite sensitive individuals. Chronic: Repeated skin contact
with this product may result in dermatitis (inflammation and reddening of the skin).
The effects of long-term, low level exposures to this product have not been
determined. Safe handling of this material on a long-term basis should emphasize
the avoidance of acute exposures.
Effects of Overexposure: N/A
Medical Conditions Generally Aggravated by Exposure: May also cause severe
Product Name: Sodium Bisulfite 1
allergic reaction in some asthmatics and sulfite sensitive individuals.
Note to Physicians: N/A
Section IV - First Aid Measures
Ingestion: If this product is swallowed, call a poison control center or doctor
immediately for treatment advice. Do not induce vomiting unless told to do so by a
poison control center or doctor. Have person drink several glasses of water if able to
swallow. Never induce vomiting or give diluents (milk or water) to someone who is
unconscious, having convulsions, or unable to swallow. If spontaneous vomiting
occurs, have victim lean forward with head down to avoid breathing in of vomitus,
rinse mouth and administer more water. Victims of chemical exposure must be taken
for medical attention. Rescuers should be taken for medical attention if necessary.
Take a copy of label and MSDS to health professional with victim.
Inhalation: If vapors, mists, or sprays of this product are inhaled, remove victim to
fresh air. If person is not breathing, call 911 or an ambulance, then give artificial
respiration, preferable mouth-to-mouth if possible. Remove or cover gross
contamination to avoid exposure to rescuers. Do not give anything by mouth to an
unconscious person.
Skin: If the product contaminates the skin, rinse skin immediately with plenty of
water for 15 minutes. Take off contaminated clothing, taking care not to contaminate
eyes. Victim must seek medical attention. Call a poison control center or doctor for
treatment advice.
Eyes: If this product enters the eyes, open victim's eyes while under gentle running
water. Use sufficient force to open eyelids. Have victim "roll" eyes. Minimum flushing
is for 15 minutes. Remove contact lenses, if present after the first 5 minutes, then
continue rinsing eye. Do not attempt to neutralize. Oils or ointments should not be
used at this time. Call a poison control center or doctor for treatment advice. Victim
must seek immediate medical attention.
Section V - Fire Fighting Measures
Flash Point: Non-flammable Autoignition Temperature: N/A
Lower Explosive Limit: N/A Upper Explosive Limit: N/A
Unusual Fire and Explosion Hazards: Not considered flammable or combustible.
This material, when heated, may release sulfur dioxide gas. Run-off from fire control
may cause pollution. Keep fire-exposed containers cool with water spray to prevent
rupture due to excessive heat. High pressure water hose may spread product from
broken containers increasing contamination. If involved in a fire, this product may
decompose to produce a variety of compounds, i.e. sulfur dioxide, sodium oxide,
oxygen), Emergency responders must wear the proper personal protective
equipment suitable for this situation to which they are responding. Products of
combustion are irritating to the respiratory tract and may cause breathing difficulty.
Extinguishing Media: Carbon dioxide, dry chemical, foam, halon, or water spray.
Special Firefighting Procedures: Incipient fire responders should wear eye
protection. Structural fire fighters must wear Self-Contained Breathing Apparatus
and full protective equipment. Move fire-exposed containers, if it can be done
without risk to firefighters. If possible, prevent run-off water from entering storm
drains, bodies of water, or other environmentally sensitive areas. If necessary,
discard or decontaminate fire response equipment using before returning such
equipment to service.
Product Name: Sodium Bisulfite 2
Section VI - Accidental Release Measures
Uncontrolled releases should be responded to by trained personnel using pre-planned
procedures. Proper protective equipment should be used. In case of a spill, clear the
affected area, protect people, and respond with trained personnel. The proper
personal protective equipment for incidental releases (e.g. ? L of the product
released in a well-ventilated area) use impermeable gloves, specific for the material
handled, goggles, face shield, and appropriate body protection. In the event of a
large release, use impermeable gloves, specific for the material handled, chemically
resistant suit and boots, and hard-hat. Self-Contained Breathing Apparatus or
respirator may be required where engineering controls are not adequate or
conditions for potential exposure exist. When respirators are required, select
NIOSH/MSHA approved based on actual or potential airborne concentrations in
accordance with latest OSHA and/or ANSI recommendations. Absorb spilled liquid
with polypads or other suitable absorbent materials. Neutralize residue with sodium
bicarbonate and water rinse. Decontaminate the area thoroughly. Test area with
litmus paper to confirm neutralization. Place all spill residue in a suitable container.
Section VII - Handling and Storage
Avoid all bodily contact. Do not take internally. Wash thoroughly after handling.
Avoid breathing mist. Store away from acids and oxidizers. Open containers
carefully.
Section VIII - Exposure Controls/Personal Protection
Exposure Controls
Engineering Controls: Use ventilation to maintain TLV below 5 mg/m3. If required
use a corrosion-resistant ventilation system separate from other exhaust ventilation
systems to ensure that there is no potential for overexposure to sprays, mists of this
product.
Work/Hygienic Practices: Wash hands thoroughly with soap and water before
eating, drinking, smoking or using toilet facilities. Do NOT place food, coffee or other
drinks in the area where dusting or splashing of solutions is possible.
Exposure Guidelines: Sodium Bisulfite: CAS Number 7631-90-5, 28-43%,
Exposure Limits (TWAs) in Air: ACGIH TLV: 5 ppm as SO2; OSHA PEL: 5 ppm as SO2;
STEL: N/A
Personal Protection
Personal Protection Equipment (PPE): None normally required. (Respirator if TLV
above 5 mg/m3) If adequate ventilation is not available or if there is potential for
airborne exposure above the exposure limits (listed in Section II) a respirator may
be worn up to respirator exposure limitations, check with respirator equipment
manufacturer's recommendation/limitations. For a higher level of protection use
positive pressure supplied air respiration protection or Self-Contained Breathing
Apparatus or if oxygen levels are below 19.5% or are unknown.
Protective Clothing: Rubber gloves, rubber boots, and rubber apron.
Eye Protection: Chemical safety goggles.
Section IX - Physical and Chemical Properties
Physical State: Liquid pH: 4.8 ?5.2
Melting Point/Range: N/A Boiling Point/Range (F): 210 - 220
Appearance/Color/Odor: Yellow liquid with a slightly sulfurous odor.
Product Name: Sodium Bisulfite 3
Solubility in Water: Complete Vapor Pressure (mmHg @ 20篊): 2 - 9
Specific Gravity (Water=1): 1.1 - 1.4 Molecular Weight: N/A
Vapor Density (Air=1): 10.26 % Volatiles: 57-72
How to detect this compound:
Because it is a weak acid, litmus paper
will maintain almost original brown Freezing Point: 6篊 (43篎)
paper bag color upon contact with this
solution.
Section X - Stability and Reactivity
Stability: Stable Hazardous Polymerization: Will Not Occur
Conditions to Avoid: Temperature at or near boiling causes evolution of toxic and
corrosive sulfur dioxide gas. Sulfur dioxide is also evolved slowly at ambient
temperatures.
Materials to Avoid: Sodium nitrite, aluminum powder, acids, and oxidizing agents
Hazardous Decomposition Products: Sulfur Dioxide Gas
Section XI - Toxicological Information
Mildly Toxic (LD [Human] = 10G)
This product is irritating to contaminated tissue.
Sodium Bisulfite may also cause severe allergic reaction in some asthmatics and
sulfite sensitive individuals.
Section XII - Ecological Information
N/A
Section XIII - Disposal Considerations
If collected material can be dissolved, it may be discharged to an industrial waste
water collection system. Consult local, state or federal regulatory agencies before
disposing of any material.
Section XIV - Transport Information
DOT Proper Shipping Name
% Sodium Bisulfite in Solution
28 Bisulfites, aqueous solutions, n.o.s. (contains Sodium Bisulfite 28%)
40 Bisulfites, aqueous solutions, n.o.s. (contains Sodium Bisulfite 40%)
43 Bisulfites, aqueous solutions, n.o.s. (contains Sodium Bisulfite 43%)
DOT Hazard Class/ I.D. No.: 8, UN 2693, III
DOT Label(s) Required: Corrosive
Section XV - Regulatory Information
Reportable Quantity (CERCLA): 5000 Lbs.
NFPA Rating: Health - 2; Flammability - 0; Instability - 1
0=Insignificant 1=Slight 2=Moderate 3=High 4=Extreme
Carcinogenicity Lists: No NTP: No IARC Monograph: No OSHA Regulated: No
Product Name: Sodium Bisulfite 4
Section XVI - Other Information
Synonyms/Common Names: Sodium Acid Sulfite, Sodium Hydrogen Sulfite
Chemical Family/Type: Inorganic Salt
Sections changed since last revision: II, III, VIII, IX, XI, XIV, XV
IMPORTANT! Read this MSDS before use or disposal of this product. Pass along the
information to employees and any other persons who could be exposed to the
product to be sure that they are aware of the information before use or other
exposure. This MSDS has been prepared according to the OSHA Hazard
Communication Standard [29 CFR 1910.1200]. The MSDS information is based on
sources believed to be reliable. However, since data, safety standards, and
government regulations are subject to change and the conditions of handling and
use, or misuse are beyond our control, Hill Brothers Chemical Company makes no
warranty, either expressed or implied, with respect to the completeness or
continuing accuracy of the information contained herein and disclaims all liability for
reliance thereon. Also, additional information may be necessary or helpful for specific
conditions and circumstances of use. It is the user's responsibility to determine the
suitability of this product and to evaluate risks prior to use, and then to exercise
appropriate precautions for protection of employees and others.
Product Name: Sodium Bisulfite 5
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