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Glyoxal sodium bisulfite hydrate

Also known as: Glyoxal sodium bisulfite, Glyoxal disodium bisulfite, Disodium 1,2-dihydroxyethane-1,2-disulfonate, Glyoxal sodium bisulfite (contains oligomers), Sodium glyoxal bisulfite, Glyoxal sodium bisulphite, Glyoxale bis hydrogen sulfite disodium salt

Glyoxal sodium bisulfite hydrate (CAS 517-21-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H4Na2O8S2 and a molecular weight of 266.15800 g/mol. Key property: a melting point of 193ºC (dec.)(lit.). It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
517-21-5
Jingsj CID
J-15896-3
Molecular Formula
C2H4Na2O8S2
Molecular Weight
266.15800 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point193ºC (dec.)(lit.)
Exact Mass265.91400
PSA171.62000

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of Glyoxal sodium bisulfite hydrate?

The CAS number of Glyoxal sodium bisulfite hydrate is 517-21-5.

What are the molecular formula and molecular weight of Glyoxal sodium bisulfite hydrate?

Glyoxal sodium bisulfite hydrate has molecular formula C2H4Na2O8S2 and molecular weight 266.15800 g/mol.

Is Glyoxal sodium bisulfite hydrate hazardous?

Glyoxal sodium bisulfite hydrate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of Glyoxal sodium bisulfite hydrate?

For Glyoxal sodium bisulfite hydrate, Downstream Products: Glycoluril, Pyrido[2,3-b]pyrazine, N-Methyl-N-phenylglycine.

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

Last updated:

How to cite: Jingsj. "Glyoxal sodium bisulfite hydrate (CAS 517-21-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15896-3 (accessed 2026-11-09).

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