Anmol Chemicals is the pioneer manufacturers of Sodium Thiosulfate, Pharmaceutical Excipients Fragrance & Flavor chemicals in India. We offer Halal and Kosher Sodium Thiosulphate made in an ISO9001, ISO22000 (FSSC22000) and cGMP certified facility. Our group has several manufacturing facilities spread across the world, supported by toll manufacturers and representatives in UAE, Europe, Africa, USA, China and has several associated manufacturing facilities spread across India. All the Information on Physics, Chemistry, Applications, Uses and Technology on Manufacture of Sodium Thiosulfate is in these pages. The units have one or more of the certifications like FDA GMP, ISO 9001, ISO 22000, HACCP, REACH, Kosher & Halal
Sodium Thiosulfate Sodium Thiosulphate Anhydrous SDS GHS, MSDS Sheet
MSDS of Sodium Thiosulphate Thiosulfate Anhydrous Manufacturers
MSDS of Hypo, Sodium Thiosulfate Thiosulphate Pentahydrate Manufacturers
Sodium Thiosulfate BP USP IP ACS Analytical Reagent FCC Food Grade Manufacturers
Sodium Thiosulfate Anhydrous SDS GHS, MSDS Sheet, Material Safety Data Sheet
1. Product Identification
Synonyms: Sodium thiosulfate anhydrous, Ametox, Antichlor, Sodium Hyposulfite anhydrous, Thiosulfuric Acid disodium salt anhydrous, Hypo anhydrous, Sodium thiosulphate anhydrous, Sodothiol, Sulfothiorine.
CAS No.: 7772-98-7 for anhydrous
EINECS: EC Number: 231-867-5
Molecular Weight: 158.11
Chemical Formula: Na2S2O3
Recommended usage: Industrial Manufacturing.
2. Hazards Identification
GHS, Globally Harmonized System Classification in accordance with 29 CFR 1910
Classification according to Regulation (EC) No 1272/2008
Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008.
This substance is not classified as dangerous according to Directive 67/548/EEC.
Labeling according Regulation (EC) No 1272/2008
GHS Label Elements
Signal Word: None
Hazards not otherwise classified (HNOC):
May causes mild skin irritation.
May Causes mild eye irritation.
P261: Avoid breathing dust/fume/gas/mist/vapors/spray.
P262: Do not get in eyes, on skin, or on clothing.
P281: Use personal protective equipment as required.
P302+P352 - IF ON SKIN: Wash with plenty of soap and water.
P303+P361+P353 - IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P304 + P340 - IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P337+313: If eye irritation persists get medical advice/attention.
HMIS (Perceived): Health hazard: 1, Flammability: 0, Physical hazards: 0
NFPA (Perceived): Health hazard: 1, Fire: 0, Reactivity Hazard: 0
3. Composition/Information on Ingredients
Ingredient: Sodium thiosulfate anhydrous
CAS No.: 7772-98-7 for anhydrous
EINECS: EC Number: 231-867-5
Percent: 97 - 100%
4. First Aid Measures
Always seek medical attention after first aid measures are provided.
Inhalation: Remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.
Ingestion: 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.
Note to Physician: Symptomatic and supportive treatment is recommended.
5. Fire Fighting Measures
Flammability of the Product: May pose a fire hazard when exposed to elevated temperatures or by contact with an ignition source.
Auto-Ignition Temperature: NA.
Flash Points: NA.
Flammable Limits: NA.
Products of Combustion: It emits toxic oxides of carbon and oxides of sulfur when heated to decomposition.
Fire: Sodium thiosulfate anhydrous may ignite at high temperatures.
Explosion: An explosion may occur if triturated with nitrates, chlorates, or permanganates. Fine dust dispersed in air in sufficient concentrations, and in the presence of an ignition source may pose dust explosion hazard.
Fire Extinguishing Media: Water spray, dry chemical, alcohol foam, or carbon dioxide. Use means suitable for extinguishing surrounding fire.
Special Information In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full face piece operated in the pressure demand or other positive pressure mode. At high temperatures or when moistened under fire conditions, it may produce toxic or irritating fumes.
6. Accidental Release Measures
Small Spill: Avoid dust formation. Avoid breathing dust. Ensure adequate ventilation. Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements.
Large Spill: Do not let the product enter drains. Use a shovel to put the material into a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and allow evacuating through the sanitary system.
7. Handling and Storage
Do not breathe dust. Wear suitable protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment.
Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Wash hands thoroughly after handling. Provide appropriate exhaust ventilation at places where dust is formed. If you feel unwell, seek medical attention.
Keep Sodium thiosulfate anhydrous in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage or contact with oxidizing material and combustible substances.
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.
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 may be worn. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator.
Skin Protection: Wear protective gloves and clean body-covering clothing.
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.
Other Control Measures: Maintain good housekeeping in work area. Dust deposits on floors and other surfaces may pick up moisture and cause the surfaces to become slippery and present safety hazards. Handle in accordance with good industrial hygiene and safety practice. Wash hands after handling.
9. Physical and Chemical Properties
Appearance: Sodium thiosulfate anhydrous is white powder or granules.
Solubility: Readily soluble in water
pH: 6-9 at 1% solution at 25 C (77F)
Molecular Weight: 158.11
Molecular Formula: Na2S2O3
% Volatiles by volume @ 21C (70F): 0
Boiling Point: Not available
Melting Point: NA
Vapor Density (Air=1): No information found
Vapor Pressure (mm Hg): No information found
Evaporation Rate (BuAc=1): No information found
10. Stability and Reactivity
Stability: Sodium thiosulfate anhydrous is stable under ordinary conditions of use and storage. Avoid heat and moisture.
Hazardous Decomposition Products: It emits toxic oxides of carbon and oxides of sulfur hydrogen sulfide along with sodium oxide when heated to decomposition.
Hazardous Polymerization: Will not occur.
Incompatibilities: Nitric acid, fluoride, sodium and potassium nitrate, strong oxidizers, mercury, chlorine, iodine and diketene.
Conditions to Avoid: Moisture, Heat, Incompatibles.
11. Toxicological Information
Toxicity to Animals:
LD50 Oral - rat - > 8.000 mg/kg on anhydrous basis.
LD50 Intraperitoneal - mouse - 5.200 mg/kg
Carcinogenicity: Not listed by ACGIH, IARC, NTP, or CA Prop 65.
Mutagenic Effects: Not available. However it may have mutagenic effect.
Teratogenic Effects: Not available.
Developmental Toxicity: Not available.
Thiosulfate occurs naturally in the body.
12. Ecological Information
Toxicity to fish: LC50 - Gambusia affinis (Mosquito fish) - 24.000 mg/l - 96 h on anhydrous basis.
Environmental Toxicity: Not available.
BOD5 and COD: Not available.
Environmental Fate: No information found. The product itself and its products of degradation are not toxic. This chemical is readily biodegradable and is not likely to bio-concentrate.
13. Disposal Considerations
Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal 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. Small amounts of this material may be suitable for sanitary sewer or trash disposal.
14. Transport Information
DOT (USA) & ADR/RID
15. Regulatory Information
OSHA Hazards: No hazard as per OSHA.
SARA Codes: 7772-98-7: Not controlled.
SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302.
Section 313: No chemicals are reportable under Section 313.
SARA 311/312 Hazards: -
TSCA: CAS# 7772-98-7 is listed on the TSCA inventory.
Health & Safety Reporting List: None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules: None of the chemicals in this product are under a Chemical Test Rule.
Section 12b: None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule: None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs: None of the chemicals in this material have an RQ.
Clean Air Act:
This material does not contain any hazardous air pollutants.
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product are listed as Hazardous Substances under the CWA.
None of the chemicals in this product are listed as Priority Pollutants under the CWA.
None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
California Prop 65: This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other reproductive harm.
Massachusetts Right To Know Components: -
Pennsylvania Right To Know Components: -
New Jersey Right To Know Components: -
WGK (Water Danger/Protection)
CAS# 7772-98-7: 0
Canada - DSL/NDSL
Canadian WHMIS Classifications: D2A
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations.
CAS# 127-09-3 is not listed on Canada's Ingredient Disclosure List.
EINECS: EC Number: 231-867-5
Australian Hazchem Code: None
Poison Schedule: None
Section 16 - Additional Information
DISCLAIMER: The information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed correct as of the date hereof. It is compiled from various sources and it is not necessarily all inclusive nor fully adequate in every circumstance. In addition, these suggestions should not be confused with nor followed in violation of applicable laws, regulations, rules or insurance requirements applicable. This MSDS sheet is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this product. Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose.
Sodium Thiosulphate Sodium Thiosulfate pentahydrate anhydrous manufacturers:
S-8, SARIFA MANSION, 2ND FLANK ROAD, CHINCHBUNDER, MUMBAI 400009, INDIA
TEL: (OFFICE) 91-22-23770100, 23726950, 23774610, 23723564. FAX: 91-22-23728264
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