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Date Effective........... March 12, 2007
(most recent revision)
Chemical Name/Synonyms... Sodium sulfite, anhydrous
Chemical family.......... Not known
Emergencies
Contacting CHEMTREC:
24 Hour Emergency Use Only #'s......
Worldwide phone: 1-(703)-527-3887
Worldwide FAX: 1-(703)-741-6090
Toll-free phone: 1-(800)-424-9300 USA only
Product or Trade Name.... SPI #09730-AB Sodium Sulfite, Anhydrous
CAS #.................... 7757-83-7
Chemical Formula......... Na2SO3
Component Name CAS # EINEC#
Sodium sulfite, anhydrous, 99% 7757-83-7 231-821-4
Sodium sulfate, anhydrous, 1% 7757-82-6 231-820-9
Proprietary additives N/L N/L N/L N/L N/L
Note: N/L = Not listed
NFPA Rating: Health: 2 Fire: 0 Reactivity: 1
HMIS Rating: Health: 2 Fire: 0 Reactivity: 1
Emergency overview: This material is not hazardous by OSHA Hazard Communication Definition. May cause severe allergic reaction. Signal Word CAUTION! Physical Health Hazards: Dust may be irritating to body tissues after prolonged contact, and inhalation of the dust can cause irritation to the nose and throat and coughing. It may also cause acute allergic reaction in some people. Physical state: Solid Color: White crystalline powder Odor: None Odor threshold: No data available Potential Health Effects: Routes of exposure Eye contact, ingestion, skin contact Signs and Symptoms of Acute Exposure: Severe coughing and/or skin irritation. Skin contact: Brief contact with the powder should not, in most cases cause irritation. However prolonged contact can cause irritation. When contact occurs, the powder should be washed off with soap and water. Brief contact with an aqueous solution of the powder should not, in most cases, cause irritation. Should contact with the aqueous solution occur, wash with soap and water. Steady, constant contact with skin in an aqueous solution should be avoided. Inhalation: Inhalation of the powder will cause irritation to the nose and throat and cause coughing and eventually chest discomfort. However, some individuals may be very allergic to this material. In the case of inhalation of the powder and dust, remove to fresh air immediately. Give artificial respiration if not breathing. Get immediate medical attention. Eye contact: Immediately start flushing with an excess of running water for at least 15 minutes, lifting the upper and lower lids occasionally. Get immediate medical attention for the eyes in such cases. Ingestion: Ingestion is unlikely. However, should ingestion occur, give the victim 8-12 ounces of water and seek medical attention. If person is unconscious, remove any visible residue from mouth and seek medical attention. Note: Never give anything by mouth to an unconscious person. Chronic Health Effects Summary: Inhalation: Long term breathing of the dust can cause irritation to the nose and throat and eventually lead to coughing. Skin Contact: Long term exposure to the dry powder of aqueous solutions formed from the dry powder will eventually lead to skin irritation. Conditions Aggravated by Exposure: Some persons may be very allergic to this material.
Take proper precautions to ensure your own health and safety before attempting to rescue and providing first aid. For specific information refer to the Emergency Overview in Section of this MSDS. Inhalation: If symptoms are experienced, immediately remove victim to fresh air, give artificial respiration if breathing has stopped. Seek immediate medical attention. Eye Contact: Wash eyes with clean low-pressure water for at least 15 minutes, lifting the upper and lower lids occasionally to ensure adequate washing. Get immediate medical attention. Skin Contact: Immediately wash with excess amounts of soap and water. If irritation persists or develops, seek medical attention. Ingestion: If ingestion occurs, immediately give the victim two glasses of water and then induce vomiting. Note: Never try to give a liquid to an unconscious person. Seek medical attention at once.
NFPA Rating: Not known
NFPA Rating: Health: 2 Fire: 0 Reactivity: 1
Flammability classification:
Non-combustible
Flash Point/Method: Not applicable
Auto-Ignition Temperature: Not known
Flammable Limits: Lower: Not applicable
Upper: Not applicable
Hazardous Combustion Products:
This material is considered to be non-combustible. However under
fire conditions, it may decompose to give off sulfur dioxide.
Special Conditions to Avoid:
Not known
Extinguishing Media:
Small fires: Use extinguishing media appropriate for the
surrounding fire.
Large fires: Use extinguishing media appropriate for the
surrounding fire.
Fire Fighting Instructions:
Protective Equipment/Clothing: Use what would be appropriate for
materials in the surrounding area, which should include self-contained
breathing apparatus and full protective clothing. Use water spray
to cool nearby containers exposed to the fire.
Instructions: Use approaches that would be appropriate for the
materials in the surrounding area.
Other comments: This material is considered to be non-combustible.
However under fire conditions, it may decompose to give off sulfur
dioxide.
Release response: Pick up and retain for recycle or disposal. Do not flush spilled material to the sewer or the environment. Reportable Quantities: See Section 15: Regulatory information.
Protective items: Avoid skin and eye contact. Use rubber gloves to protect the skin, especially when handling the dry powder. Wear safety glasses, not only when working with the dry powder but also when clearing negatives in the aqueous solution. When using larger quantities than one would normally use in a negative clearing application, we would recommend a suitable laboratory apron and to have in the vicinity, a safety shower and eye bath. Wash hands thoroughly with soap and water after each use and launder contaminated clothing before reuse. Handling: Transfer from the stock container with a minimum amount of dusting. In the event of a spill, collect the spilled powder for storage in approved waste containers. Keep out of sewers, storm drains, surface water and soil. Neutralizing Agent: None Storage: Keep container dry. Store away from excessive heat and away from strong oxidizing agents. Keep container closed to prevent contamination. It is also desirable to keep tightly closed to keep out moisture which could cause some amount of "clumping" of the powder.
Engineering Controls: If user operations generate dust or fumes, ventilate area to prevent accumulation. Personal Protection: Inhalation: Use appropriate NIOSH/MSHA approved respiratory protection where atmosphere exceeds recommended limits. Skin: Protective clothing such as long sleeves or a lab coat should be worn, especially when handling the powder. Eye: Always use chemical safety glasses, when working with either the dry powder or the clearing of negatives in an aqueous solution. It is all too easy to splash some of the solution in the eyes at this point. This is especially pertinent for those doing microscopy, because of the personal aversion many microscopists have to the wearing of safety glasses when doing precision microscopy work. If you have microscopists working under your control and direction, make sure they are wearing their safety glasses when clearing their negatives!
Boiling Point/Range: Decomposes at 593° C (1100° F)
pH: 9.6 – 9.8 (1% solution)
Vapor Pressure: Not applicable
Viscosity: Not applicable
Specific Gravity:
Solid/Liquid 2.63 (water = 1)
Vapor Not applicable
Water solubility: 27% at 20°C (68°F)
Octanol/Water Partition Coefficient in Kow: Specific value not known
Melting/Freezing Point: Decomposes at 593° C (1100° F)
Evaporation Rate: None
Chemical Stability: The product is stable Conditions to Avoid: Excess heat, moisture, and contamination of any kind. Incompatibility with: Acids and strong oxidizing agents. Hazardous Products of Deposition: Not expected to decompose under normal conditions. If in a fire, it is itself noncombustible, however it may decompose and release vapors of sulfur dioxide. Reactions with Air and Water: Do not add water to an excess of the dry powder. Always add dry powder slowly to an excess of water.
Summary: Not considered to be toxic to humans or animals
Component:
Sodium sulfite
LC50-LC50 Mixture:
Oral: Rabbit LD50 = 2825 mg/kg
Skin Effects: Dry powder and to a lesser degree aqueous
solutions can be irritating to body tissues.
Acute Inhalation Effects: Irritation to the nose and throat
accompanied with severe coughing and chest pains.
Subchronic Effects: May cause allergic reaction.
Chronic Effects/Carcinogenicity:
NTP: No
IARC: No
OSHA: No
Reproductive/Development Effects:
No reproductive or developmental effects are expected.
Exotoxicity: Sodium sulfite depletes oxygen when added to water. Environmental Fate: No information found in our selected references. Bioaccumulation: Not expected to occur.
This material is NOT classified as a hazardous material by RCRA. Use only licensed transporters and permitted disposal facilities and conform to all federal, state and local regulations.
Proper Shipping Name: Sodium sulfite, anhydrous DOT Hazard Class: Non-Regulated DOT PSN Code: ZZZ DOT Proper Shipping Name: Not regulated by this mode of transportation IMO Hazard Class: Non-Regulated IMO PSN Code: ZZZ IMO Proper Shipping Name: Not regulated by this mode of transportation IATA Hazard Class: Non-Regulated IATA PSN Code: ZZZ IATA Proper Shipping Name: Not regulated by this mode of transportation AFI Hazard Class: Non-Regulated AFI PSN Code: ZZZ AFI Proper Shipping Name: Not regulated by this mode of transportation UN/NA ID: Not Regulated Packing Group: Not Applicable Labels: Not Regulated Marine Pollutant: Not known NAER Guidebook: Not Regulated DOT STatus: Not Regulated
TSCA: All components of this product are listed on the TSCA 8(b)
inventory. If identified components of this product are listed under
the TSCA 12(b) Export Notification Rule, they will be listed below.
TSCA 12(b) Component Listed under TSCA Section
None
SARA-Section 313 Emissions Reporting:
Component Reporting Threshold
None
SARA-Section 311/312: No components present in this product are
subject to the reporting requirements of this statute.
CERCLA Hazardous Substances and their Reportable Quantities:
Component Reportable Quantity
None
State Right to Know Lists:
None
California Prop. 65:
Proposition 65 requires manufacturers or distributors of consumer products
into the State of California to provide a warning statement if the product
contains ingredients for which the State has found to cause cancer, birth
defects or other reproductive harm. If this product contains an ingredient
listed by the State of California to cause cancer or reproductive toxicity,
it will be listed below:
WGK (Water Danger/Protection):
CAS# 7757-83-7 : 1
CAS# 7757-82-6 : 0
Canada:
WHMIS: This product has a WHMIS classification of D2B.
DSL/NDSL:
CAS# 7757-83-7 is listed on the DSL list and is not listed on the NDSL list.
CAS# 7757-82-6 is listed on the DSL List and is not listed on the NDSL list.
European/International Regulations:
Labeling according to EC Directives
Hazard Symbol: none
Risk Phrases:
R 22: Harmful if swallowed
R 36: Irritating to eyes
R 38: Irritating to the skin
R 40: Possibility of irreversible effects.
Safety Phrases:
S 22: Do not breathe dust
S 26: In case of contact with eyes, rinse immediately with plenty of water and seek medical attention.
S 36: Wear suitable protective clothing
Disclaimer of Liability: Caution! Do not use SPI Supplies products or materials in applications involving implantation within the body; direct or indirect contact with the blood pathway; contact with bone, tissue, tissue fluid, or blood; or prolonged contact with mucous membranes. Products offered by SPI Supplies are not designed or manufactured for use in implantation in the human body or in contact with internal body fluids or tissues. SPI Supplies will not provide to customers making devices for such applications any notice, certification, or information necessary for such medical device use required by US FDA (Food and Drug Administration) regulation or any other statute. SPI Supplies and Structure Probe, Inc. make no representation, promise, express warranty or implied warranty concerning the suitability of these materials for use in implantation in the human body or in contact with internal body tissues of fluids.
The information and recommendations set forth above are taken from sources believed to be accurate as of the date hereof, however SPI Supplies and Structure Probe, Inc. make no warranty with respect to the accuracy of the information or the suitability of the recommendations, and assume no liability to any user thereof. The information contained in this sheet does not constitute a hazard assessment and should not be used in place of the user's own assessment of workplace risks as required by other health and safety legislation.
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