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CAS 870-72-4 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 3789115/10/2010

SODIUM HYDROXYMETHANE SULFONATE

Sodium hydroxymethanesulphonate

SODIUM HYDROXYMETHANE SULFONATE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 870-72-4

CAS 870-72-4PubChem CID 2723822

Sodium Formaldehyde Bisulfite

IUPAC name: sodium hydroxymethanesulfonate

Molecular formula: CH3NaO4S
Molecular weight: 134.09 g/mol
Exact mass: 133.96497403 Da
Topological polar surface area: 85.8 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 4
Covalent units: 2
Defined stereocentres: 0

Also known as

Formaldehyde sodium bisulfiteFormbisSodium hydroxymethanesulphonateHydroxymethanesulfonic acid monosodium saltSodium formaldehydebisulfiteHSDB 5766Sodium hydroxymethylsulfonateNSC 2441

16 more reported names

EINECS 212-800-9UNII-I566KHA05FFormaldehyde sulfite sodium saltI566KHA05FMonosodium hydroxymethanesulfonateAI3-23356Methanesulfonic acid, hydroxy-, sodium saltFormaldehyde-sodium bisulfite compoundFormaldehyde, compd with monosodium sulfite (1:1)Formaldehyde, compd with sodium hydrogen sulfate (1:1)Hydroxymethanesulfonic acid, monosodium saltSulfuric acid, monosodium salt, compd with formaldehyde (1:1)Sulfurous acid, monosodium salt, compd with formaldehyde (1:1)1-Hydroxymethanesulfonic acid sodium salt (1:1)NSC-2441FORMALDEHYDE SODIUM BISULFITE [MI]

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEMBL:CHEMBL3185494
EPA DTXSID:DTXSID3027328

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for SODIUM HYDROXYMETHANE SULFONATE

INCI name

SODIUM HYDROXYMETHANE SULFONATE

Description

Sodium hydroxymethanesulphonate

Record provenance

Inventory reference: 37891
Imported identity: SODIUM HYDROXYMETHANE SULFONATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for SODIUM HYDROXYMETHANE SULFONATE

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Key data

CAS

870-72-4

212-800-9

Restriction

—

Function

ANTIMICROBIAL: Preventing and/or slowing down microbial growth.
REDUCING: Changing the chemical nature of another ingredient by adding hydrogen (or removing oxygen).

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#26676 · SODIUM HYDROXYMETHANE SULFONATE

Ingredients with overlapping formulation functions

SH-OCTAPEPTIDE-4ANTI-SEBORRHEIC, ANTIOXIDANT, CHELATING, REDUCING, SKIN PROTECTING

SODIUM BISULFITEANTIOXIDANT, HAIR WAVING OR STRAIGHTENING, PRESERVATIVE, REDUCING

SODIUM GLYOXYLATEREDUCING

SODIUM HYDROSULFITEREDUCING, VISCOSITY CONTROLLING

SODIUM METABISULFITEANTIOXIDANT, PRESERVATIVE, REDUCING

SODIUM OXYMETHYLENE SULFOXYLATEREDUCING

SODIUM SULFITEANTIOXIDANT, HAIR WAVING OR STRAIGHTENING, PRESERVATIVE, REDUCING

SODIUM THIOGLYCOLATEANTIOXIDANT, DEPILATORY, HAIR WAVING OR STRAIGHTENING, REDUCING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How SODIUM HYDROXYMETHANE SULFONATE appears in the CosIng inventory

The CosIng inventory lists SODIUM HYDROXYMETHANE SULFONATE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

SODIUM HYDROXYMETHANE SULFONATE is also tagged with 2 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

SODIUM HYDROXYMETHANE SULFONATE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, SODIUM HYDROXYMETHANE SULFONATE carries the following function designation(s):

CAS 870-72-4 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for SODIUM HYDROXYMETHANE SULFONATE

This page reproduces the CosIng inventory entry for SODIUM HYDROXYMETHANE SULFONATE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research SODIUM HYDROXYMETHANE SULFONATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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