Safety Data Sheet - Sodium Dithionite

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Chemical Name Sodium Dithionite

Product Form Substance

Catalogue No. AL4133

CAS Number 7775-14-6

EC Number 231-890-0

EC Index Number 016-030-00-5

Grade 85%

HSN Code 28311010

Molecular Formula Na2S2O4

SECTION 1: Identification of the substance/mixture and of the company/undertaking

1.1 Product identifier

Chemical Name Sodium Dithionite

Catalogue No. AL4133

Product form Substance

CAS Number 7775-14-6

EC Number 231-890-0

Grade 85%

EC Index Number 016-030-00-5

Chemical Formula Na2S2O4

HSN Code 28311010

Synonyms Sodium Hydrosulfite

Chemical Structure -

1.2 Relevant identified uses of the substance or mixture and uses advised against

Use of the substance/mixture Reducing agent in textile dyeing and analytical chemistry

Uses advised against Not specified

1.3 Details of the supplier of the safety data sheet

Company identification Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.

1.4 Emergency Contact Details

Phone / e-Mail Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in

SECTION 2: Hazards identification

2.1 Classification of the substance or mixture

Classification according to Regulation (EC) No 1272/2008 Self-heat. 1; Acute Tox. 4

Classification source ECHA C&L Inventory via PubChem CID 24489 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements

2.2 Label elements

Hazard pictograms Flammable, Irritant

Signal word Danger

Hazard statements H251: Self-heating; may catch fire; H302: Harmful if swallowed

2.3 Other hazards

Other hazards Spontaneously combustible when moist; may release toxic gases upon decomposition.

SECTION 3: Composition/information on ingredients

3.1 Substance

Name Sodium Dithionite

CAS No. 7775-14-6

SECTION 4: First aid measures

4.1 Description of first aid measures

First-aid measures after inhalation Move to fresh air. If symptoms persist, seek medical attention.

First-aid measures after skin contact Wash with soap and water. If irritation occurs, seek medical attention.

First-aid measures after eye contact Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.

First-aid measures after ingestion Rinse mouth. Do not induce vomiting. Seek medical attention immediately.

4.2 Most important symptoms and effects, both acute and delayed

Symptoms relating to use Irritation of the respiratory tract, skin, and eyes; potential for chemical burns.

4.3 Indication of any immediate medical attention and special treatment needed

General information Treat symptomatically. Show this safety data sheet to the treating physician.

SECTION 5: Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media Water spray, carbon dioxide, dry chemical powder, foam.

Unsuitable extinguishing media Not specified

5.2 Special hazards arising from the substance or mixture

Special procedures May ignite spontaneously in moist conditions; use dry chemical, foam, or carbon dioxide extinguishers.

5.3 Advice for firefighters

Protection during firefighting Do not enter fire area without proper protective equipment, including respiratory protection.

SECTION 6: Accidental release measures

6.1.1 For non-emergency personnel

Emergency procedures Evacuate area and ventilate. Avoid moisture and heat sources.

6.3 Methods and material for containment and cleaning up

Methods for cleaning up Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. Carefully collect remainder.

6.4 Reference to other sections

Reference Not specified

SECTION 7: Handling and storage

7.1 Precautions for safe handling

Precautions for safe handling Avoid contact with moisture and heat. Use appropriate personal protective equipment (PPE).

Hygiene measures Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.

7.2 Conditions for safe storage, including any incompatibilities

Storage conditions Dry. Well closed. Separated from strong oxidants and acids. Store in an area without drain or sewer access.

SECTION 8: Exposure controls/personal protection

8.2 Exposure controls

Hand protection The selected protective gloves have to satisfy the specifications of EU Directive 89686EEC and the standard EN 374 derived from it. Handle with gloves.

Eye protection Chemical safety goggles or safety glasses

Skin and body protection Wear suitable protective clothing

Respiratory protection Where risk assessment shows air-purifying respirators are appropriate use a dust mask type N95 (US) or type P1 (EN 143) respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).

SECTION 9: Physical and chemical properties

9.1 Information on basic physical and chemical properties

Physical state Solid

Colour White to pale gray

Odour Faint sulfurous

Odour threshold Not specified

pH value Not applicable

Relative evaporation rate (butylacetate=1) Not applicable

Melting point 52 °C (decomposes)

Freezing point Not applicable

Boiling point 200°C (decomposes)

Flash point about 100 °C (open cup)

Auto-ignition temperature about 190 °C

Decomposition temperature 190°C

Flammability (solid, gas) Spontaneously combustible when moist

Vapour pressure Not applicable

Relative vapour density at 20°C Not applicable

Density 2.38 g/cu cm

Solubility Slightly sol in alcohol; very soluble in water

Log Pow < -4.7

Viscosity, kinematic Not applicable

Viscosity, dynamic Not applicable

Explosive properties Not applicable

Oxidising properties Not applicable

Explosive limits Not applicable

SECTION 10: Stability and reactivity

10.1 Reactivity

Reactivity Reacts with moisture and air, decomposing to release sulfur dioxide and other products.

10.2 Chemical stability

Chemical stability Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed.

10.3 Possibility of hazardous reactions

Possibility of hazardous reactions Decomposes above 100 °C . This produces toxic fumes including sulfur oxides. The substance is a strong reducing agent. It reacts with oxidants.

10.4 Conditions to avoid

Conditions to avoid Avoid contact with incompatible materials and excessive heat.

10.5 Incompatible materials

Incompatible materials Strong oxidizers, acids, and moisture.

10.6 Hazardous decomposition products

Hazardous decomposition products Not specified

SECTION 11: Toxicological information

11.1 Information on toxicological effects

Acute toxicity LD50 Rat oral approx 2500 mg/kg bw; LD50 Mouse ip 900 mg/kg bw

Skin corrosion/irritation Not classified (based on available data)

Serious eye damage/irritation Not classified (based on available data)

Respiratory or skin sensitisation Not classified (based on available data)

Germ cell mutagenicity Not classified (based on available data)

Carcinogenicity Not classified (based on available data)

Specific target organ toxicity (single exposure) Not classified (based on available data)

Specific target organ toxicity (repeated exposure) Not classified (based on available data)

SECTION 12: Ecological information

12.1 Toxicity

Toxicity information Not specified

12.2 Persistence - degradability

Persistence - degradability Not specified

12.3 Bioaccumulative potential

Bioaccumulative potential Not specified

12.4 Mobility in soil

Mobility in soil Not specified

12.6 Other adverse effects

Environmental precautions Not specified

SECTION 13: Disposal considerations

13.1 Waste treatment methods

Additional Info Dispose of contents/container in accordance with local, regional, national and international regulations.

SECTION 14: Transport information

14.1 UN number

UN-No. (ADR) UN 1384

UN-No. (IMDG) UN 1384

UN-No. (IATA) UN 1384

UN-No. (ADN) UN 1384

UN-No. (RID) UN 1384

14.2 UN proper shipping name

Proper Shipping Name (ADR) Sodium Dithionite

Proper Shipping Name (IMDG) Sodium Dithionite

Proper Shipping Name (IATA) Sodium Dithionite

Proper Shipping Name (ADN) Sodium Dithionite

Proper Shipping Name (RID) Sodium Dithionite

14.3 Transport hazard class(es)

Transport hazard class(es) 4.2

14.4 Packing group

Packing group (ADR) II

Packing group (IMDG) II

Packing group (IATA) II

Packing group (ADN) II

Packing group (RID) II

14.5 Environmental hazards

Dangerous for the environment Not specified

Marine pollutant Not specified

Other information No supplementary information available

SECTION 15: Regulatory information

15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture

15.1.1 EU-Regulations Not specified

SECTION 16: Other Information

Disclaimer The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a guarantee or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text.