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Sodium dithionite

Also known as: Disodium dithionite, Dithionous acid, disodium salt, Sodium hydrosulfite, Sodium sulfoxylate, Sodium hypodisulfite, Sodium hydrosulphite, Blankit, Burmol, Vatrolite

Sodium dithionite (CAS 7775-14-6) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Na2O4S2 and a molecular weight of 174.107 g/mol. Key properties include a melting point of 300 °C, a boiling point of 1390°C and a density of 2.13. It is classified under GHS with signal word Danger and hazard statements H251 and H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7775-14-6
Jingsj CID
J-36006-5
Molecular Formula
Na2O4S2
Molecular Weight
174.107 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point300 °C
Boiling Point1390°C
Density2.13
Exact Mass173.903336
PSA118.68000
LogP0.39100
Additional Property250 g/L (20 ºC)

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger
  • H251
  • H302 — Harmful if swallowed

Customs & Trade Information

HS Code2831101000

Frequently Asked Questions

What is the CAS number of Sodium dithionite?

The CAS number of Sodium dithionite is 7775-14-6.

What are the molecular formula and molecular weight of Sodium dithionite?

Sodium dithionite has molecular formula Na2O4S2 and molecular weight 174.107 g/mol.

Is Sodium dithionite hazardous?

Sodium dithionite has GHS signal word Danger and hazard statements H251; H302 — Harmful if swallowed.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Sodium dithionite (CAS 7775-14-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36006-5 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.