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
PubChem CID reference: 24477
Synonyms: SODIUM THIOSULFATE; Sodium thiosulphate; Disodium thiosulfate; Hypo; Chlorine Control; Chlorine Cure; Sodium thiosulfate, anhydrous; Thiosulfuric acid, disodium salt; Sodium thiosulfate (Na2S2O3); Sodium thiosulphate (Na2S2O3)
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
Melting point: 48.5°C (119°F)
Density: 1.667
Water solubility: Solubility in water, g/100ml at 20 °C: 20.9
Log Pow (log Kow): -4.35
Not found in the public records searched: odor, boiling point, flash point, vapor pressure, vapor density, lower explosive limit, upper explosive limit, auto-ignition temperature, viscosity and pH. Enter these from your supplier's safety data sheet or your own test report before the draft is issued.
Where each value came from
- Density — Hazardous Substances Data Bank (HSDB)
- Weast, R.C. (ed.). Handbook of Chemistry and Physics. 57th ed. Cleveland: CRC Press Inc., 1976, p. B-163
- View the record
A value with no row here was assembled from more than one record, so no single record is credited for it. The draft you buy carries this table as an appendix covering all 16 sections.
Sources
- Hazardous Substances Data Bank (HSDB)
- 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.