Molekula
Lactic Acid 90%
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Lactic acid 90% is a hygroscopic organic acid (2-hydroxypropanoic acid) widely used in food preservation, pharmaceuticals, and cosmetic formulations for its antimicrobial properties, pH adjustment, and as a building block in biodegradable polymers. Industrial buyers also use it in leather tanning, textile dyeing and finishing, pulp and paper processing, and as an animal feed additive. It appears as a clear, colorless to slightly yellow liquid with a mild acidic odor. CAS 79-33-4, molecular formula C3H6O3, molecular weight 90.08 g/mol. Store at ambient temperature in tightly sealed containers. Signal word: Danger (corrosive, skin/eye irritant). Molekula supplies Lactic Acid 90% from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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500 g — $78.90 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless viscous liquid |
| Chloride (Cl-) | Conforms |
| Assay | 88.0 – 92.0 |
| Sulphated Ash | ≤0.05% |
| Reducing Sugar | Conforms |
| APHA | ≤10 |
| Heavy Metals (Pb) | ≤10 (mg/kg) |
| Readily Carbonisable Substances | Conforms |
| Iron (Fe) | ≤5 (mg/kg) |
| Methanol / Methyl esters | ≤50 (mg/kg) |
| Arsenic (As) | ≤1 (mg/kg) |
| Calcium (Ca) | ≤200 (mg/kg) |
| Sulphates (SO4)(2-) | ≤200 (mg/kg) |
| Limit of Citric, Oxalic, Phosphoric and Tartaric Acid | Conforms |
| Relative Density (20 °C) | 1.20 - 1.21 (g/ml) |
| Stereochemical purity (L-isomer) | ≥95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 110 °C |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 16.8 °C |
| pKa | pKa = 3.861 |
Source: PubChem CID 107689 (Human Metabolome Database (HMDB), ChEMBL)
Identification
| Property | Value |
|---|---|
| SKU | 90023276 |
| CAS Number | 79-33-4 |
| IUPAC Name | (2S)-2-hydroxypropanoic acid |
| EC Number | 201-196-2 |
| Molecular Formula | C3H6O3 |
| Molecular Weight | 90.08 |
| Exact Mass | 90.0317 |
| SMILES | C[C@@H](C(=O)O)O |
| InChIKey | JVTAAEKCZFNVCJ-REOHCLBHSA-N |
| InChI | InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)/t2-/m0/s1 |
| PubChem CID | 107689 |
| UN Number | UN3265 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2918.11.1000 |
| Tariff Code | 2918110080 |
Safety & GHS
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Corrosive
GHS05
Hazard statements
- EUH071 Corrosive to the respiratory tract
- H290 May be corrosive to metals
- H303 May be harmful if swallowed
- H314 (sub cat. 1C) Causes severe skin burns and eye damage
- H318 Causes serious eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, German, Spanish, French, Italian, Portuguese, Arabic, Dutch.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- (2S)-2-hydroxypropanoic acid
- (S)-2-Hydroxypropanoic acid
- (S)-2-Hydroxypropionic acid
- (S)-Lactic acid
- L-Lactic acid
- Lactic acid, L-
- Paralactic acid
- Propanoic acid, 2-hydroxy-, (2S)-
- Sarcolactic acid
- Tisulac
Frequently asked questions
What is Lactic Acid 90% commonly used for?
Lactic Acid 90% is widely used in food and beverage production as a preservative, flavoring agent, and pH adjuster, as well as in pharmaceuticals, cosmetics, and industrial applications like cleaning products and biodegradable plastics.
What is the chemical formula and molecular weight of Lactic Acid 90%?
The chemical formula is **C₃H₆O₃**, and the molecular weight is **90.08 g/mol**.
How should Lactic Acid 90% be stored?
Store at **ambient temperature** in a tightly sealed container, away from moisture, strong oxidizing agents, and incompatible substances.
What grades of Lactic Acid 90% does Molekula supply?
Molekula supplies **technical-grade Lactic Acid 90%** suitable for industrial, food-grade, and pharmaceutical applications (where applicable).
Can Molekula supply Lactic Acid 90% in bulk quantities?
Yes, Molekula can provide Lactic Acid 90% in **bulk quantities** (drums, IBCs, or tanker loads) depending on your requirements.
What documentation comes with an order of Lactic Acid 90%?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.