Basic information
- CAS
10102-17-7- Standard SMILES
O.O.O.O.O.O=S([O-])([O-])=S.[Na+].[Na+]- InChIKey
PODWXQQNRWNDGD-UHFFFAOYSA-L- Molecular formula
- H10Na2O8S2
- Average molar mass
- 248.19 g/mol
- Monoisotopic mass
- 247.96124818
Names & identifiers
- Preferred name
- Sodium Thiosulfate Pentahydrate
- IUPAC
- disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane;pentahydrate
- English name
- Sodium thiosulfate pentahydrate
- Molecular formula
- H10Na2O8S2
- Molecular weight
- 248.18
Names & synonyms
SODIUM THIOSULFATE PENTAHYDRATE10102-17-7Disodium thiosulfate pentahydrateSodium thiosulfate, pentahydrateThiosulfuric acid (H2S2O3), disodium salt, pentahydrateDTXSID6044197CHEBI:32150AntichlorRefChem:931939DTXCID4024197pentahydrate of sodium thiosulfate600-156-5
Show more names
SODIUM THIOSULPHATESODIUM THIOSULFATE SOLUTION1kgHYPOSodium Thiosulfate Hydrate4-MPHSodiuM thiosulfate pentahydra5-BPDiNatriumthiosulfat
sodium thiosulphate pentahydrateMFCD00149186Na2S2O3.5H2Odisodium;dioxido-oxo-sulfanylidene-lambda6-sulfane;pentahydrateThiosulfuric acid (H2S2O3), sodium salt, hydrate (1:2:5)Sodium thiosulfate (pentahydrate)TinverSodium Hyposulfite Pentahydrate
Database identifiers
- CAS
10102-17-7- PubChem CID
- 61475
- DTXSID
DTXSID6044197- ChEBI
CHEBI:32150- UNII
- HX1032V43M
- EC Number
- 600-156-5
Properties
Computed structural properties
- Topological polar surface area
- 109 Ų
- Hydrogen bond donors
- 5
- Hydrogen bond acceptors
- 9
- Rotatable bonds
- 0
- Heavy atoms
- 12
- Formal charge
- 0
- Complexity
- 82
Physicochemical properties
- Melting point
- 48.5 °C · 48.5 °C
- Boiling point
- 100 C · 100 C
- Density
- 1.01 g/mL · 1.01 g/mL at 25 °C
- bulk density
- 1000 kg/m3 · 1000kg/m3
- refractive index
- 1.489 · 1.489
- storage temp.
- 5 °C · Store at +5°C to +30°C.
- solubility
- 2 O: · H2O: 1 M at 20 °C, clear, colorless
- form
- Solid
- color
- White tranparent
- Specific Gravity
- 1.729 · 1.729
- Odor
- Odorless
- PH Range
- 6 · 6 - 8.5
- PH
- 6 · 6.0-7.5 (100g/l, H2O, 20℃)
- Water Solubility
- 680 g/L · 680 g/L (20 ºC)
- Merck
- 14 · 14,8694
- Stability
- Stable. Incompatible with strong acids, iodine, mercury.
- Cosmetics Ingredients Functions
- REDUCING
- InChI
- 1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
- InChIKey
- AKHNMLFCWUSKQB-UHFFFAOYSA-L
- SMILES
- O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=S
- LogP
- -0.428 · -0.428 (est)
- CAS DataBase Reference
- 10102 · 10102-17-7(CAS DataBase Reference)
- SCOGS (Select Committee on GRAS Substances)
- Sodium thiosulfate
- Substances Added to Food (formerly EAFUS)
- SODIUM THIOSULFATE
- FDA UNII
- 1032 V43M · HX1032V43M
- EPA Substance Registry System
- Thiosulfuric acid (H2S2O3), disodium salt, pentahydrate (10102-17-7)
- UNSPSC Code
- 41116107 · 41116107
- NACRES
- 55 · NA.55
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 302 · H302-H315-H319-H335
- Precautionary statements
- 261 · P261-P305+P351+P338
- PPE
- 95 · Eyeshields, Gloves, type N95 (US)
- Hazard Codes
- Xi
- Risk Statements
- 36 · 36/37/38
- Safety Statements
- 24 · 24/25-37/39-36-26
- WGK Germany
- 1 · 1
- RTECS
- 6660000 · WE6660000
- F
- 10 · 10
- TSCA
- Yes
- HS Code
- 28323000 · 28323000
- Storage Class
- 11 · 11 - Combustible Solids
- Toxicity
- 50 orally · LD50 orally in Rabbit: > 5000 mg/kg
Safety & regulation
Safety data
- F
- 10
- PPE
- Eyeshields, Gloves, type N95 (US)
- wgk
- 1
- tsca
- Yes
- rtecs
- WE6660000
- hs_code
- 28323000
- Toxicity
- LD50 orally in Rabbit: > 5000 mg/kg
- risk_code
- 36/37/38
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xi
- safety_code
- 24/25-37/39-36-26
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H302-H315-H319-H335
- Precautionary statements
- P261-P305+P351+P338
Chemistry & industry
Applications
UsesTitrimetry.
UsesSodium thiosulfate pentahydrate is used as an analytical reagent in laboratories. It is used in photographic processing and in gold extraction. Its alkylated derivatives, S-alkylthiosulfonates, are known as Bunte salts. It is involved in the preparation of thioglycolic acid. Furthermore, it is used to dechlorinate tap water, for removing free bromine from solutions and to check the pH of bleach solutions with liquid indicators. Other uses include tanning of leather; as an active component in hand warmers and chemical heating pads and as an anionic surfactant to aid in the dispersion of pharmaceutical preparations.
Upstream & downstream products
Upstream raw materials
Downstream products
Suppliers100 total
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Additional notes
DefinitionChEBI: Sodium thiosulfate pentahydrate is a hydrate consisting of sodium thiosulfate with 5 mol eq. of water. It has a role as an antidote to cyanide poisoning, a nephroprotective agent and an antifungal drug. It contains a sodium thiosulfate.
Related reactions
162 records
Compound notes
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