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Lactic acid, l-

CAS 79-33-4

Also registered as 2 other CAS numbers

26811-96-1 · 1715-99-7

Lactic acid, l- chemical structure

Concern score

Not assessed — no hazard data yet.

Lactic acid, l- in plain language

What it is

Also known as L-lactic acid · (s)-lactic acid · Sarcolactic acid · (2S)-2-Hydroxypropanoic acid · Dextrorotatory lactic acid · L(+)-lactic acid

Show all 27 names

L- lactic acid (+) · Paralactic acid · (+)-lactic acid · (s)-(+)-lactic acid · (S)-2-Hydroxypropanoic acid · (S)-2-Hydroxypropionic acid · 2-hydroxypropionic acid · ClO2-C Activator · Key Dermolac · L-(+)-alpha-Hydroxypropionic acid · L-Lactic acid (2-hydroxy propionic acid) · Lactisan Winter · Ph 90 · Purac · PURAC Powder H 60 · Pleo Sanuvis · Purac FCC 50 · Tisulac · l-(+)-lactic acid · lactic acid · Sarcolacticum acidum

What it does

Used in consumer products as a preservative, a surfactant and a chelating agent.

  • Preservative
  • Surfactant
  • Chelating agent
  • pH adjuster
  • Fragrance
  • Flavouring
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Lactic acid, l- appears in these published regulatory listings.

  • In marketed US drugs
  • Inactive ingredient in US drugs

Recorded in these product areas

  • Found in consumer products
  • Beauty
  • Cleaning
  • Pharma
  • Food
  • Industrial
  • USFDAinactive ingredient database10 entries — 7 administration routes
    • Route: AURICULAR (OTIC); Dosage form: SOLUTION/ DROPS; Potency: ADJ PHSource →
    • Route: INTRAMUSCULAR; Dosage form: INJECTION; Potency: ADJ PHSource →
    • Route: INTRAVENOUS; Dosage form: INJECTION; Maximum daily exposure: 51 mgSource →
    • Route: INTRAVENOUS; Dosage form: INJECTION, SOLUTION; Maximum daily exposure: 44 mgSource →
    • Route: ORAL; Dosage form: CAPSULE; Maximum daily exposure: 132 mgSource →
    • Route: ORAL; Dosage form: SOLUTION; Maximum daily exposure: 88 mgSource →
    • Route: SUBCUTANEOUS; Dosage form: INJECTION; Maximum daily exposure: 51 mgSource →
    • Route: TOPICAL; Dosage form: AEROSOL, FOAM; Maximum daily exposure: 10 mgSource →
    • Route: TOPICAL; Dosage form: CREAM; Potency: 0.44 %w/wSource →
    • Route: VAGINAL; Dosage form: CREAM; Potency: ADJ PHSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 94 composition records across product categories including Personal care, Food and drug, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Chelating agent, Flavouring and nutrient.
    • EPA CPDat observed this chemical in 94 composition records across product categories including Personal care, Food and drug, Cleaning products and household care. EPA CPDat classifies this chemical for functional uses including Surfactant (surface active agent), Chelating agent, Flavouring and nutrient.Source →
  • USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 77 active drug products and 94 total products.
    • FDA NDC lists this ingredient in 77 active drug products and 94 total products.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 Lactic acid, l-. 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.

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    No JECFA evaluation on file.

  • EFSA

    European Food Safety Authority

    No EFSA opinion on file.

Evidence & sources

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

7 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated april-27-2015

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA Inactive Ingredient Database

    regulatory · updated 2026-01-09

    Open →
  • FDA National Drug Code Directory

    regulatory · updated 2030-01-07

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

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

Food use

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

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 Lactic acid, l- in a product composition. These are source records, not Greenveil catalog products.

Source records

94

Named organisations

6

Personal careFood and drugCleaning products and household careIndustrial productsCleaning and safety

Typical roles

PreservativeSurfactantChelating agentpH adjusterFragranceFlavouring
See products using Lactic acid, l- →

Catalog

Found in these products

Their ingredient lists include Lactic acid, l-; 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 Lactic acid, l- in the catalog.