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  • beauty
  • cleaning

DL-Threonine

CAS 80-68-2

Also registered as 3 other CAS numbers

5090-44-8 · 31138-27-9 · 1187422-62-3

Concern score

Not assessed — no hazard data yet.

DL-Threonine in plain language

What it is

Also known as Threonine, dl- · L-Threonine · (+/-)-Threonine · (±)-threonine · DL-Threonin · DL-treonina

Show all 7 names

threonine

What it does

Used in consumer products as a fragrance ingredient, a flavouring and a conditioner.

  • Fragrance
  • Flavouring
  • Conditioner
  • Antistatic
  • Hair waving/straightening
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. DL-Threonine appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • USEPAcommercial use observedEPA CPDat observed this chemical in 286 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Anti-static agent, Softener and conditioner, Hair waving or straightening.
    • EPA CPDat observed this chemical in 286 composition records across product categories including Personal care. EPA CPDat classifies this chemical for functional uses including Anti-static agent, Softener and conditioner, Hair waving or straightening.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for DL-Threonine. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • 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.

Evidence & sources

No graded research studies for DL-Threonine yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

4 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated September 2018

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →

Suitability

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

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 DL-Threonine in a product composition. These are source records, not Greenveil catalog products.

Source records

286

Named organisations

6

Personal care

Typical roles

FragranceFlavouringConditionerAntistaticHair waving/straightening
See products using DL-Threonine →

Catalog

Found in these products

Their ingredient lists include DL-Threonine; 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 DL-Threonine in the catalog.