Substance profile
L-Lactic Acid
L-Lactic Acid: liquid.
01 · Identification
What L-Lactic Acid is
L-Lactic Acid: liquid. Its molecular formula is C3H6O3 and its molecular weight is 90.08 g/mol. It melts at 16.8 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
L-Lactic Acid identifiers and molecular data
L-Lactic Acid CAS number and EC number
L-Lactic Acid molecular formula and molecular weight
Other names for L-Lactic Acid
- L-(+)-lactic acid
- (2S)-2-hydroxypropanoic acid
03 · GHS classification
L-Lactic Acid hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
L-Lactic Acid pictograms and signal word
L-Lactic Acid hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 1 | H318 | GHS05 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
L-Lactic Acid hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H314 | Causes severe skin burns and eye damage. |
| H318 | Causes serious eye damage. |
L-Lactic Acid supplemental EU statements (EUH)
| Code | Statement |
|---|---|
| EUH071 | Corrosive to the respiratory tract. |
This page lists only the codes assigned to L-Lactic Acid. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for L-Lactic Acid
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of L-Lactic Acid issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
L-Lactic Acid precautionary statements
CLP Annex VI assigns 7 precautionary statements to L-Lactic Acid. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
L-Lactic Acid name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | L-(+)-млечна киселина (2 S )-2-хидроксипропанова киселина |
| Spanish español | Ácido L-(+)-láctico ácido (2 S )-2-hidroxipropanoico |
| Czech čeština | L-(+)-mléčná kyselina (2 S )-2-hydroxypropanová kyselina |
| Danish dansk | L-(+)-mælkesyre (2 S )-2-hydroxypropansyre |
| German Deutsch | L-(+)-Milchsäure (2 S )-2-Hydroxypropansäure |
| Estonian eesti | L-(+)-piimhape (2 S )-2-hüdroksüpropaanhape |
| Greek ελληνικά | L-(+)-γαλακτικό οξύ (2 S )-2-υδροξυπροπανοϊκό οξύ |
| English English | L-(+)-lactic acid (2 S )-2-hydroxypropanoic acid |
| French français | acide L-(+)-lactique acide (2 S )-2-hydroxypropanoïque |
| Croatian hrvatski | L-(+)-mliječna kiselina (2 S )-2-hidroksipropanska kiselina |
| Italian italiano | acido L-(+)-lattico acido (2 S )-2-idrossipropanoico |
| Latvian latviešu | L-(+)-pienskābe (2 S )-2-hidroksipropionskābe |
| Lithuanian lietuvių | L(+)-pieno rūgštis (2 S )-2-hidroksipropano rūgštis |
| Hungarian magyar | L-(+)-tejsav (2 S )-2-hidroxipropánsav |
| Maltese Malti | Aċidu L-(+)-lattiku Aċidu (2 S )-2-idrossipropanojku |
| Dutch Nederlands | L-(+)-melkzuur (2 S )-2-hydroxypropaanzuur |
| Polish polski | L-(+)-kwas mlekowy kwas (2 S )-2-hydroksypropanowy |
| Portuguese português | ácido L-(+)-lático ácido (2 S )-2-hidroxipropanoico |
| Romanian română | acid L-(+)-lactic acid (2 S )-2-hidroxipropanoic |
| Slovak slovenčina | kyselina (+)-L-mliečna kyselina (2 S )-2-hydroxypropánová |
| Slovenian slovenščina | L-(+)-mlečna kislina (2 S )-2-hidroksipropanojska kislina |
| Finnish suomi | L-(+)-maitohappo (2 S )-2-hydroksipropaanihappo |
| Swedish svenska | L-(+)-mjölksyra (2 S )-2-hydroxipropansyra |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
L-Lactic Acid GHS label elements
Everything CLP Annex VI fixes for L-Lactic Acid, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
L-Lactic Acid
- Causes severe skin burns and eye damage.
- Causes serious eye damage.
- Corrosive to the respiratory tract.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF IN EYES:
- Immediately call a POISON CENTER/doctor/…
- Do NOT induce vomiting.
- Remove contact lenses, if present and easy to do. Continue rinsing.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open L-Lactic Acid in the GHS label constructor →
07 · Health hazards
L-Lactic Acid health hazards and exposure limits
L-Lactic Acid hazard summary
Corrosive to rabbit skin, mildly irritating to guinea pig skin, and not irritating to pig skin; Not sensitizing in a study of guinea pigs; A 13-week oral study of rats produced a NOAEL of 500 mg/kg/day (highest tested dose); Studies on reproductive and developmental toxicity not considered necessary because lactic acid is a product of human intermediary metabolism; [EPA ChAMP: Interim Hazard Characterization] An irritant that may cause serious eye injury; [Sigma-Aldrich MSDS]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
L-Lactic Acid properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
L-Lactic Acid melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 16.8 °C (62.2 °F) | HMDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Questions
L-Lactic Acid — frequently asked questions
What is the CAS number of L-Lactic Acid?
The CAS number of L-Lactic Acid is 79-33-4. Its EC number is 201-196-2.
What is the chemical formula of L-Lactic Acid?
The molecular formula of L-Lactic Acid is C3H6O3 and its molecular weight is 90.08 g/mol.
What does a L-Lactic Acid label have to show?
Under CLP Annex VI the label for L-Lactic Acid carries the pictogram Corrosion and the signal word is Danger.
Is L-Lactic Acid flammable?
CLP Annex VI assigns L-Lactic Acid no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is L-Lactic Acid a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for L-Lactic Acid. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of L-Lactic Acid?
The melting point reported for L-Lactic Acid is 16.8 °C (62.2 °F) (HMDB).
Nearby
Substances next to L-Lactic Acid
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