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Hexa-2,4-dienoic acid and its salts

CAS 110-44-1 · 60/100 · High conf.

Also registered as 4 other CAS numbers

590-00-1 · 7492-55-9 · 7757-81-5 · 24634-61-5

Concern score

60/100High concern based on regulatory listings.
High confidence

Hexa-2,4-dienoic acid and its salts in plain language

What it is

On cosmetic ingredient lists it appears as “Calcium sorbate”.

Also known as Calcium sorbate · Potassium sorbate · Sodium sorbate · Sorbic acid · Tea-sorbate · (E,E)-Hexa-2,4-dienoic acid

Show all 19 names

Potassium 2,4-hexadienoate · Potassium hexa-2,4-dienoate · 2,4-2,4-HEXADIENOIC acid potassium salt · 2,4-Hexadienoic acid, potassium salt (1:1) · BB Powder · Calcium dihexa-2,4-dienoate, (E,E)- · Caswell No. 701C · Hexa-2,4-dienoate de potassium · Hexa-2,4-dienoic acid · Potassium (E,E)-hexa-2,4-dienoate · Sodium (E,E)-hexa-2,4-dienoate · acidum sorbicum · kalii sorbas

What it does

Used in cosmetics as a preservative and a fragrance ingredient. Calcium Sorbate is the calcium salt of Sorbic Acid.

  • Preservative
  • Fragrance
  • Flavouring
  • Antimicrobial
Is it a concern?
High concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

What the listings say

Permitted, with conditions — Hexa-2,4-dienoic acid and its salts appears on published "allowed" regulatory lists rather than on a restriction list.

Hexa-2,4-dienoic acid and its salts is listed in Annex V of the EU Cosmetics Regulation (EC) 1223/2009 (preservatives allowed in cosmetic products).

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. Hexa-2,4-dienoic acid and its salts appears in these published regulatory listings.

  • EU Annex V — permitted preservative
  • EU permitted preservative

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Pharma
  • Food
  • Industrial
  • EUEFSAEFSA opinion8 entries
    • Scientific Opinion on Flavouring Group Evaluation 70, Revision 1 (FGE.70Rev1): consideration of aliphatic, linear, alpha,beta-unsaturated, di- and trienals and related alcohols, acids and esters evaluated by JECFA (61st-68th-69th meeting) (EFSA FAF)Source →
    • Opinion on the follow-up of the re-evaluation of sorbic acid (E200) and potassium sorbate (E202) as food additives (EFSA FAF)Source →
    • Scientific Opinion on the re-evaluation of sorbic acid (E 200), potassium sorbate (E 202) and calcium sorbate (E 203) as food additives (EFSA ANS)Source →
    • Scientific Opinion on the safety and efficacy of sorbic acid and potassium sorbate when used as technological additives for all animal species (EFSA FEEDAP)Source →
    • Scientific Opinion on Flavouring Group Evaluation 96 (FGE.96): Consideration of 88 flavouring substances considered by EFSA for which EU production volumes / anticipated production volumes have been submitted on request by DG SANCO. Addendum to FGE. 51, 52, 53, 54, 56, 58, 61, 62, 63, 64, 68, 69, 70, 71, 73, 76, 77, 79, 80, 83, 84, 85 and 87 (EFSA CEF)Source →
    • Flavouring Group Evaluation 70 (FGE.70): Consideration of aliphatic, alicyclic, linear, alpha,beta-unsaturated, di- and trienals and related alcohols, acids and esters evaluated by JECFA (61st meeting) Scientific Opinion of the Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF) (EFSA CEF)Source →
    • Scientific Opinion on the safety and efficacy of potassium sorbate as a silage additive for all animals except dogs and cats (EFSA FEEDAP)Source →
    • Scientific Opinion on the safety and efficacy of potassium sorbate for dogs and cats (EFSA FEEDAP)Source →
  • EUCosIngActive5 entries
    • Calcium Sorbate is the calcium salt of Sorbic Acid that conforms to the formula: Restriction: V/4Source →
    • Cosmetics Regulation annex V / ref 4.Source →
    • Potassium Sorbate is the organic salt that conforms generally to the formula: Restriction: V/4Source →
    • Sodium Sorbate is the sodium salt of Sorbic Acid that conforms to the formula: Restriction: V/4Source →
    • Sorbic Acid is the organic acid that conforms generally to the formula: Restriction: V/4Source →
  • EUECallowed_listedAnnex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.6% (acid)
    • Annex V of EU Cosmetics Regulation (EC) 1223/2009: preservatives allowed in cosmetic products. Maximum concentration: 0.6% (acid)Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 7766 composition records across product categories including Food and drug, Personal care, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including Biocide, Preservative, Flavouring and nutrient.
    • EPA CPDat observed this chemical in 7766 composition records across product categories including Food and drug, Personal care, Specialty occupational products. EPA CPDat classifies this chemical for functional uses including Biocide, Preservative, Flavouring and nutrient.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

  • EFSA

    European Food Safety Authority

    • Scientific Opinion on Flavouring Group Evaluation 70, Revision 1 (FGE.70Rev1): consideration of aliphatic, linear, alpha,beta-unsaturated, di- and trienals and related alcohols, acids and esters evaluated by JECFA (61st-68th-69th meeting) (EFSA FAF)

      2019 · EU EFSA listing · Read the source →

    • Opinion on the follow-up of the re-evaluation of sorbic acid (E200) and potassium sorbate (E202) as food additives (EFSA FAF)

      2019 · EU EFSA listing · Read the source →

    • Scientific Opinion on the re-evaluation of sorbic acid (E 200), potassium sorbate (E 202) and calcium sorbate (E 203) as food additives (EFSA ANS)

      2015 · EU EFSA listing · Read the source →

    • Scientific Opinion on the safety and efficacy of sorbic acid and potassium sorbate when used as technological additives for all animal species (EFSA FEEDAP)

      2014 · EU EFSA listing · Read the source →

    • Scientific Opinion on Flavouring Group Evaluation 96 (FGE.96): Consideration of 88 flavouring substances considered by EFSA for which EU production volumes / anticipated production volumes have been submitted on request by DG SANCO. Addendum to FGE. 51, 52, 53, 54, 56, 58, 61, 62, 63, 64, 68, 69, 70, 71, 73, 76, 77, 79, 80, 83, 84, 85 and 87 (EFSA CEF)

      2011 · EU EFSA listing · Read the source →

    • Flavouring Group Evaluation 70 (FGE.70): Consideration of aliphatic, alicyclic, linear, alpha,beta-unsaturated, di- and trienals and related alcohols, acids and esters evaluated by JECFA (61st meeting) Scientific Opinion of the Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF) (EFSA CEF)

      2009 · EU EFSA listing · Read the source →

    • Scientific Opinion on the safety and efficacy of potassium sorbate as a silage additive for all animals except dogs and cats (EFSA FEEDAP)

      2013 · EU EFSA listing · Read the source →

    • Scientific Opinion on the safety and efficacy of potassium sorbate for dogs and cats (EFSA FEEDAP)

      2012 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for Hexa-2,4-dienoic acid and its salts yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2010-10-16

    Open →
  • EFSA OpenFoodTox

    regulatory · updated 2026-10-02

    Open →
  • EPA Chemical and Products Database

    exposure · updated october 13, 2011

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed Hexa-2,4-dienoic acid and its salts in a product composition. These are source records, not Greenveil catalog products.

Source records

7,766

Named organisations

6

Food and drugPersonal careSpecialty occupational productsCleaning products and household careConstructionHome maintenance

Typical roles

PreservativeFragranceFlavouringAntimicrobial
See products using Hexa-2,4-dienoic acid and its salts →

Catalog

Found in these products

Their ingredient lists include Hexa-2,4-dienoic acid and its salts; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

Co-occurrence

Often appears with

Ingredients that frequently appear alongside Hexa-2,4-dienoic acid and its salts in the catalog.