What other records share CAS 66170-10-3?

CAS 66170-10-3 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.

How do I check if my formula contains SODIUM ASCORBYL PHOSPHATE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 5871915/10/2010

SODIUM ASCORBYL PHOSPHATE

L-Ascorbic acid, 2-(dihydrogen phosphate), trisodium salt

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

INCI Checker Compare all markets Search similar

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.

Markets and their official sources Search every market for this name

Chemical identity and properties

PubChem 2D chemical structure for CAS 66170-10-3

CAS 66170-10-3PubChem CID 10990876

Sodium Ascorbyl Phosphate

IUPAC name: trisodium;[(2R)-2-[(1S)-1,2-dihydroxyethyl]-3-oxido-5-oxo-2H-furan-4-yl] phosphate

Molecular formula: C6H6Na3O9P
Molecular weight: 322.05 g/mol
Exact mass: 321.94425161 Da
Topological polar surface area: 162.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 9
Covalent units: 4
Defined stereocentres: 2

Also known as

Sodium L-Ascorbyl-2-PhosphateSodium ascorbyl monophosphateTrisodium ascorbate-2-phosphate836SJG51DRl-Ascorbic acid, 2-monophosphate, trisodium saltL-Ascorbic acid, 2-(dihydrogen phosphate), trisodium saltRefChem:183786613-904-0

16 more reported names

2-phospho-l-ascorbic acid trisodium saltL-Ascorbic acid 2-phosphate trisodium saltL-Ascorbic acid 2-phosphate trisodiumsodium (R)-5-((S)-1,2-dihydroxyethyl)-2-oxido-4-oxo-4,5-dihydrofuran-3-yl phosphateTrisodium (R)-5-((S)-1,2-dihydroxyethyl)-4-oxido-2-oxo-2,5-dihydrofuran-3-yl phosphateSodium (R)-5-((S)-1,2-dihydroxyethyl)-4-oxido-2-oxo-2,5-dihydrofuran-3-yl phosphateUNII-836SJG51DRSodium (R)-5-[(S)-1,2-Dihydroxyethyl]-4-oxido-2-oxo-2,5-dihydrofuran-3-yl PhosphateC6H6Na3O9Psodium ascorbate 2-phosphateSodium ascorbyl phosphate/SAPl-Ascorbic acid, 2-monophosphatMSK1598YRWWOAFMPXPHEJ-OFBPEYICSA-KCCG-267723DA-49456

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

EPA DTXSID:DTXSID601014965

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 ASCORBYL PHOSPHATE

INCI name

SODIUM ASCORBYL PHOSPHATE

Description

L-Ascorbic acid, 2-(dihydrogen phosphate), trisodium salt

Record provenance

Inventory reference: 58719
Imported identity: SODIUM ASCORBYL PHOSPHATE
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for SODIUM ASCORBYL PHOSPHATE

Browse

Browse EU annexes

Explore Annex II–VI to see which substances are prohibited, restricted or permitted under specific conditions.

Search annex entries

Search the annex database for entries matching SODIUM ASCORBYL PHOSPHATE or related substances.

Key data

CAS

66170-10-3

425-180-1

Restriction

—

Function

ANTIOXIDANT: Inhibiting reactions promoted by oxygen, thus avoiding oxidation and rancidity.

Official EU ingredient-name evidence

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

#26274 · SODIUM ASCORBYL PHOSPHATE

Ingredients with overlapping formulation functions

SMILAX CHINA FRUIT EXTRACTANTIMICROBIAL, ANTIOXIDANT, ASTRINGENT, HAIR CONDITIONING, SKIN CONDITIONING - EMOLLIENT

SMILAX CHINA ROOT EXTRACTANTIMICROBIAL, ANTIOXIDANT, ASTRINGENT, HAIR CONDITIONING, SKIN CONDITIONING - EMOLLIENT

SMITHSONITE EXTRACTANTIOXIDANT, SKIN CONDITIONING

SODIUM ASCORBATEANTIOXIDANT

SODIUM ASCORBYL PROPYL HYALURONATE CROSSPOLYMERANTIOXIDANT; HUMECTANT; SKIN CONDITIONING - MISCELLANEOUS

SODIUM ASCORBYL/CHOLESTERYL PHOSPHATEANTIOXIDANT, SKIN CONDITIONING

SODIUM BISULFITEANTIOXIDANT, HAIR WAVING OR STRAIGHTENING, PRESERVATIVE, REDUCING

SODIUM BOROHYDRIDEANTIOXIDANT, BULKING, SKIN CONDITIONING

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 ASCORBYL PHOSPHATE appears in the CosIng inventory

The CosIng inventory lists SODIUM ASCORBYL PHOSPHATE 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 ASCORBYL PHOSPHATE is also tagged with 1 cosmetic function 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 ASCORBYL PHOSPHATE 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 ASCORBYL PHOSPHATE carries the following function designation(s):

ANTIOXIDANT

CAS 66170-10-3 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.

View CAS records

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Open INCI Checker

Source note for SODIUM ASCORBYL PHOSPHATE

This page reproduces the CosIng inventory entry for SODIUM ASCORBYL PHOSPHATE 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 ASCORBYL PHOSPHATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect SODIUM ASCORBYL PHOSPHATE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to SODIUM ASCORBYL PHOSPHATE, its identifiers or nearby name variants.