Safety data sheet for Sodium thiosulfate
CAS 7772-98-7
This is the free preview of a draft SDS for Sodium thiosulfate — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Photography, pool chlorine neutraliser.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 7772-98-7
- Molecular formula
- Na2O3S2
- Molecular weight
- 158.11 g/mol
- Signal word
- None required — not classified
Hazard classification
- Not Classified
Section 1 — Identification
1.1 Product identifier
Product identifier: Sodium Thiosulfate
Chemical name (IUPAC): disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane
CAS number: 7772-98-7
EC number: 231-867-5
REACH registration number: Not required for substances manufactured/imported <1 tonne/year; otherwise confirm the active registrant number before external issue.
IUPAC name: disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane
PubChem CID reference: 24477
Synonyms: SODIUM THIOSULFATE; Sodium thiosulphate; Disodium thiosulfate; Sodothiol; Hypo; Chlorine Control; Chlorine Cure; Sodium thiosulfate, anhydrous; Thiosulfuric acid, disodium salt; Sodium thiosulfate (Na2S2O3)
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses: Laboratory reagent, industrial processing aid, formulation component, and internal product-stewardship review subject to supplier confirmation.
Uses advised against: Consumer, medical, food, or any other use not covered by the supplier's label, technical instructions, or exposure scenario.
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification: Not classified as hazardous according to the sources named below.
2.2 Label elements
Signal word: Not available
GHS pictograms: None
Hazard statement: Not classified
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Solid
Appearance: POWDER
Odor: Not available
Boiling point: Not available
Melting point: 48.5°C (119°F)
Flash point: Not available
Density: 1.667
Vapor pressure: Not available
Water solubility: Solubility in water, g/100ml at 20 °C: 20.9
Log Pow (log Kow): -4.35
Vapor density: Not available
Lower explosive limit: Not available
Upper explosive limit: Not available
Auto-ignition temperature: Not available
Viscosity: Not available
pH: Not available
9.2 Other information
Other information: Additional classification-supporting physical hazard data should be confirmed from the customer-specific product specification where required.
Sources
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Sodium thiosulfate, and where each one comes from
3 measured values for 2 properties, read from 1 public database. Every record agrees. Follow any record to read the value at its source.
Density
1 record
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
Solubility
2 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- PRACTICALLY INSOL IN ALCOHOL
- Hazardous Substances Data Bank (HSDB)
- 50 G SOL IN 100 CC WATER; 231 G @ 100 °C
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Sodium thiosulfate, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Sodium thiosulfate
The draft covers all 16 sections under OSHA 29 CFR 1910.1200 and GHS Rev. 7, or the CLP EC 1272/2008 layout for the EU. Each draft arrives as an editable .docx and a PDF with an appendix naming the source of each value, in about 60 seconds. $5 per document, no account.