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Sodium Hydrosulfite


MATERIAL SAFETY DATA SHEET (MSDS) SODIUM HYDROSULPHITE

1. Product Identification Synonyms: SODIUM HYDROSULPHITE (Sodium dithionite)

CAS No.: 7775-14-6 Molecular Weight: 174.10 Chemical Formula: Na2S2O4

Supplier: Chemical Store Inc. (www.ChemicalStore.com)

1059 Main Avenue, Clifton, NJ 07011

24 Hour Emergency Telephone Number:

1-800-733-3665 or 1-972-404-3228 (U.S.); 32.3.575.55.55 (Europe); 1800-033-111

(Australia)

Customer Service: 1-973-405-6248

Synonyms: SODIUM HYDROSULPHITE (Sodium dithionite)

Product Use: Reductive bleaching and reducing agent in pulp/paper and textile

2. Composition/Information on Ingredients

Ingredient CAS No Percent Hazardous

---------------------- ------------ ------------ ---------

Sodium Hydrosulfite 7775-14-6 88% Yes

3. Hazards Identification

Emergency Overview

--------------------------

WARNING! FLAMMABLE SOLID. MAY IGNITE WITH MOISTURE AND AIR. HARMFUL IF SWALLOWED OR INHALED. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT.

SAFETY DATA Ratings (Provided here for your convenience) ---------------------------------------------------------------------------------Health Rating: 2 - Moderate (Life)

Flammability Rating: 4 - Extreme (Flammable)

Reactivity Rating: 3 - Severe (Air Reactive)

Contact Rating: 3 - Severe

Lab Protective Equip: GOGGLES & SHIELD; LAB COAT & APRON; VENT HOOD; PROPER GLOVES Storage Color Code: Red Stripe (Store Separately) ---------------------------------------------------------------------------------Potential Health Effects

----------------------------------

Inhalation: Inhalation can cause severe irritation of mucous membranes and upper respiratory tract. Symptoms may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea and vomiting. High concentrations may cause lung damage. Higher exposures can cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency.

Ingestion: May cause abdominal pain, nausea, vomiting, colic and diarrhea, circulatory disturbances, central nervous system depression, irritability, restlessness, convulsions, cyanosis, respiratory and cardiovascular collapse, and death. Estimated lethal dose 30 grams.

Skin Contact: Can irritate the skin causing a rash or burning feeling on contact. High concentrations could cause burns.

Eye Contact: Causes irritation, redness, and pain. May cause burns and possible damage to vision.

Chronic Exposure: Exposure may induce allergic reaction.

Aggravation of Pre-existing Conditions: Persons allergic to "sulfiting" agents, used to preserve some foods, may be more susceptible to the effects of this substance.

4. First Aid Measures

Inhalation: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.

Ingestion: Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. Get medical attention.

Skin Contact: Wipe off excess material from skin then immediately flush skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Get medical attention. Wash clothing before reuse.

Thoroughly clean shoes before reuse.

Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids occasionally. Get medical attention immediately.

5. Fire Fighting Measures

Fire: Flammable Solid. Heats spontaneously in contact with moisture and air. May ignite in the presence of combustible materials.

Explosion: Not considered to be an explosion hazard. An explosion occurred after mixing sodium hydrosulfite, aluminum powder, potassium carbonate and benzaldehyde.

Fire Extinguishing Media: Carbon dioxide, dry chemical or sand.

Special Information: In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.

6. Accidental Release Measures

Keep in a tightly closed container. Protect from physical damage. Store in a cool, dry, ventilated area away from sources of heat, moisture and incompatibilities. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product. Do Not attempt to clean empty containers since residue is difficult to remove. Do not pressurize, cut, weld, braze, solder, drill, grind or expose such containers to heat, sparks, flame, static electricity or other sources of ignition: they may explode and cause injury or death.

7. Handling and Storage Keep in a tightly closed container. Protect from physical damage. Store in a cool, dry, ventilated area away from sources of heat, moisture and incompatibilities. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product. Do Not attempt to clean empty containers since residue is difficult to remove. Do not pressurize, cut, weld, braze, solder, drill, grind or expose such containers to heat, sparks, flame, static electricity or other sources of ignition: they may explode and cause injury or death.

8. Exposure Controls/Personal Protection

Airborne Exposure Limits: None established.

Ventilation System: A system of local and/or general exhaust is recommended to keep employee exposures as low as possible. Local exhaust ventilation is generally preferred because it can control the emissions of the contaminant at its source, preventing dispersion of it into the general work area. Please refer to the ACGIH document, Industrial Ventilation, A Manual of Recommended Practices, most recent edition, for details.

Personal Respirators (NIOSH Approved): For conditions of use where exposure to dust or mist is apparent and engineering controls are not feasible, a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil particles (e.g. lubricants, cutting fluids, glycerine, etc.) are present, use a NIOSH type R or P filter. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.

Skin Protection: Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact.

Eye Protection: Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible. Maintain eye wash fountain and quick-drench facilities in work area.

9. Physical and Chemical Properties

Appearance: White to grayish-white granular powder.

Odor: Distinct sulfur dioxide odor.

Solubility: Soluble in water.

Density: 2.19 pH: No information found.

% Volatiles by volume @ 21C (70F): 0

Boiling Point: Not applicable.

Melting Point: 52C (126F) Decomposes.

Vapor Density (Air=1): 3.6

Vapor Pressure (mm Hg): No information found.

Evaporation Rate (BuAc=1): No information found.

10. Stability and Reactivity

Stability: Stable when stored in closed containers at room temperature. Heats spontaneously in contact with moisture and air. Loses all of its water of crystallization at 110C. Decomposes in hot water and acid.

Hazardous Decomposition Products: Burning may produce sulfur oxides.

Hazardous Polymerization: Will not occur.

Incompatibilities: Water, combustible materials, strong oxidizing agents, strong acids and sodium chlorite. An explosion occurred after mixing sodium hydrosulfite, aluminum powder, potassium carbonate and benzaldehyde.

Conditions to Avoid: Moisture, humidity, heat, flame, ignition sources and incompatibles

11. Toxicological Information

Slightly toxic orally. May cause gastrointestinal disturbances.

Practically non-toxic by skin absorption.

This product is NOT known or reported to be Carcinogenic by any reference source including IARC, NTP, OSHA, or EPA.

This product is NOT known or reported to be mutagenic. Literature indicates Ames salmonella typhimurium and E. Coli test results were negative.

TOXICITY

TOXICITY TYPE; DESCRIPTION; RESULTS; TESTED ON

* LD50 (ORAL): Lethal Dose (50%); 2500 mg/kg of body weight; Rat

* LD50 (ORAL): Lethal Dose (50%); 1500 mg/kg of body weight; Mouse

SKIN EFFECTS: Skin Irritation; Slight to moderate; Rabbit

EYE EFFECTS: Eye Irritation; Mild to moderate; Rabbit

12. Ecological Information

Environmental Fate: No information found.

Environmental Toxicity: No information found.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be handled as hazardous waste and sent to a RCRA approved waste facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.

14. Transport Information

Domestic (Land, D.O.T.)

Proper Shipping Name: SODIUM DITHIONITE

Hazard Class: 4.2

UN/NA: UN1384

Packing Group: II

Information reported for product/size: 2.5KG

International (Water, I.M.O.)

-----------------------------

Proper Shipping Name: SODIUM DITHIONITE

Hazard Class: 4.2

UN/NA: UN1384

Packing Group: II

Information reported for product/size: 2.5KG

International (Air, I.C.A.O.)

-----------------------------

Proper Shipping Name: SODIUM DITHIONITE

Hazard Class: 4.2 UN/NA: UN1384

Packing Group: II

Information reported for product/size: 2.5KG

15. Regulatory Information

OSHA: Meets criteria for hazardous material as defined by the Occupational Safety and Health Administration. (OSHA) in 29 CFR 1910.1200.

TSCA: We certify that all components of this product are registered under the regulations of the Toxic Substance Control Act (TSCA).

SARA (SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT): Sodium hydrosulfite

SARA (SECTION 311/312):

REACTIVE HAZARD: Y

PRESSURE HAZARD: N

FIRE HAZARD: Y

IMMEDIATE/ACUTE: Y

DELAYED/CHRONIC: N

SARA (SECTION 302): RQ

EXTREMELY HAZARDOUS SUBSTANCE: N

CERCLA HAZARDOUS SUBSTANCE: N (See below for other components)

SARA (SECTION 304):

RELEASE NOTIFICATION (for sulfur dioxide during decomposition) : Y (500 lbs (SO2) )

CERCLA - COMPREHENSIVE ENVIRONMENTAL RESPONSE, COMPENSATION, AND LIABILITY ACT: 4. Sodium salt, mineral acid derivative

(FOR COMPONENTS LISTED IN SECTION 2): RQ = 5000 lbs.

RCRA (RESOURCE CONSERVATION & RECOVERY ACT) HAZARDOUS WASTE: Yes, if product becomes a waste due to ignitibility and reactivity.

RCRA #: D001, D003

SARA (SECTION 313 - TOXIC CHEMICAL):

This product does NOT contain any toxic chemical listed under Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA) of 1986.

CLEAN WATER ACT - PRIORITY POLLUTANTS:

This product contains no known Priority Pollutants at concentrations greater than 0.1%.

CLEAN AIR ACT - VOLATILE ORGANIC COMPOUNDS:

VOLATILE ORGANIC COMPOUNDS (VOC) (EPA METHOD 24/24a): None

LOSS ON DRYING (%): None expected

SODIUM HYDROSULFITE POWDERS & BLENDS

FDA: This product is NOT registered with the Food and Drug Administration (FDA).

GENERALLY REGARDED AS SAFE (GRAS): Sodium Hydrosulfite is Generally Regarded As Safe for use in Paper and Paperboard products used in Food Packaging (21 CFR 176.170(a) & 21 CFR 182.90).

Sodium Hydrosulfite is Generally Regarded As Safe for use with Textiles and Textile Fibers for producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food [21 CFR 177.2800(d)(1)].

USDA: This product is NOT registered with the U. S. Department of Agriculture (USDA).

CANADIAN REGULATORY INFORMATION:

CANADIAN ENVIRONMENTAL PROTECTION ACT (CEPA):

This product conforms to the CEPA regulations.

LISTED ON DOMESTIC SUBSTANCE LIST (DSL):

ALL components are listed.

LISTED AS PRIORITY SUBSTANCE:

Components may contain respirable particulate matter < 10 microns.

LISTED AS TOXIC SUBSTANCE:

Components are NOT listed.

EXPORT CONTROL LIST:

Components are NOT listed.

NATIONAL POLLUTANT RELEASE INVENTORY (NPRI):

Product NOT subject to NPRI reporting.

LISTED ON NON-DOMESTIC SUBSTANCES LIST (NDSL):

Components are NOT listed.

This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all the information required by the Controlled Products Regulations.

WORKPLACE HAZARDOUS INFORMATION SYSTEM (WHMIS): ONTROLLED

CLASS: DIVISION:

B 6 Reactive flammable material

D 2B Toxic Material causing other effects

F Dangerously reactive material

EUROPEAN/INTERNATIONAL REGULATIONS:

EUROPEAN INVENTORY OF EXISTING COMMERCIAL SUBSTANCES (EINECS) NUMBER: 231-890-0 (for sodium hydrosulfite)

EUROPEAN PRIORITY LISTS:

Chemical components are not listed in a priority list (as foreseen under Council Regulation (EEC) No 793/93 on the evaluation and control of the risks of existing substances)

SODIUM HYDROSULFITE POWDERS & BLENDS

HAZARD SYMBOLS: Xn (HARMFUL)

RISK PHRASES:

R7 May cause fire.

R22 Harmful if swallowed.

R31 Contact with acids liberates toxic gas.

SAFETY PHRASES:

S7 Keep container tightly closed.

S8 Keep container dry.

S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

S28 After contact with skin, rinse immediately with plenty of water and seek medical advice if redness or irritation persists.

S43 In case of fire, use water and contain all runoff.

Reactivity: Yes (Pure / Solid)

Australian Hazchem Code: 1P

Poison Schedule: None allocated.

WHMIS: This MSDS has been prepared according to the hazard criteria of the Controlled Products Regulations (CPR) and the MSDS contains all of the information required by the CPR.

16. Other Information

NFPA Ratings: Health: 3 Flammability: 1 Reactivity: 2 Other: Water reactive

Label Hazard Warning: WARNING! FLAMMABLE SOLID. MAY IGNITE WITH MOISTURE AND AIR. HARMFUL IF SWALLOWED OR INHALED. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT.

Label Precautions: Keep away from heat, sparks and flame. Avoid contact with eyes, skin and clothing.

Avoid breathing dust. Keep container closed. Use only with adequate ventilation. Store in a tightly closed container. Wash thoroughly after handling.

Label First Aid: If swallowed, induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. In case of contact, wipe off excess material from skin then immediately flush eyes or skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Wash clothing before reuse. In all cases, get medical attention.

Product Use: Laboratory Reagent.

Revision Information: No Changes. ***********************************************************Disclaimer:
The information above is believed to be accurate and represents the best information currently available to us. However, we make no warranty of merchantability or any other warranty, express or implied, with respect to such information, and we assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no event shallMiniScience be liable for any claims, losses, or damages of any third party or for lost profits or any special, indirect, incidental, consequential or exemplary damages, howsoever arising, even if MiniScience has been advised of the possibility of such damages.



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