C3H6O3
90.08 g/mol
Food AdditiveDanger
Lactic acid
CAS50-21-5EC200-018-0
Category
Food Additive
Compound Class
Organic Acid
Primary Use
food preservative and acidulant
Lactic acid is an organic acid that appears as a white solid in its pure form and dissolves to give a colorless solution. It is widely used as a food preservative and acidulant.
food preservativeacidulant
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
DL-Lactic acid
CAS598-82-3
food acidulant and preservative
ReferenceSame Category
Aldehydo-D-ribose
CAS50-69-1
flavoring agent
ReferenceSame Category
D-sorbitol
CAS50-70-4
sugar alcohol sweetener
ReferenceSame Category
Vitamin C
CAS50-81-7
antioxidant and dietary supplement
ReferenceSame Category
Aldehydo-D-glucose
CAS50-99-7
Nutrient replenisher and food sweetener
Referencestereoisomer of
Iron(II) lactate
CAS5905-52-2
food color and hematinic
Referencestereoisomer of
ZINC LACTATE
CAS6155-68-6
Cosmetic ingredient for zinc supplements
Referencestereoisomer of
Sodium lactate
CAS72-17-3
Food acidity regulator and preservative
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
Customs Tariff Classification
The international HS code for Lactic acid (CAS 50-21-5) is 2918.11.
HS code (international, 6-digit)
2918.11
EU CN code (8-digit)
2918 11 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-hydroxypropanoic acid
InChIKey
JVTAAEKCZFNVCJ-UHFFFAOYSA-N
SMILES
CC(C(=O)O)O
Synonyms (163)
- E-270
- Lactic Acid, Racemic, USP
- Lactic acid (JP18/USP)
- Lactic acid USP
- Lactic acid, United States Pharmacopeia (USP)
- Lactic acid, meets USP testing specifications
- (2RS)-2-Hydroxypropanoic acid
- (RS)-2-Hydroxypropionsaeure
- (RS)-2-hydroxypropanoic acid
- 05%/5% Elite Barrier Dip
- 2-Hydroxy-2-methylacetic acid
- 2-hydroxypropanoic acid
- 2-hydroxypropionic acid
- 4b5w
- Acidum lacticum
- Aethylidenmilchsaeure
- Atlas Barrier Activator
- Atlas PrePost Activator
- Atlas Prep Activator
- Aura Teat Scrubber
- Aztec Gold Activator
- Biolac
- CD2 Activator
- CD2-FB Activator
- CD2-HD Activator
- CD2-LV Activator
- CD2-X11-LD Activator
- Chem-Cast
- Cheongin Haejanghwan
- Cheongin Haewoohwan
- Cheongin Samrakhwan
- Cheongin samrakhan
- ChloraGuard 105 Part A
- Chloroxide A
- Chlorsan 105 Part A
- Cover All Part A
- Cover All RF Part A
- Cover II Part A
- D Lactic Acid
- DL-Lactic Acid (90%)
- DL-Lactic Acid (90per cent)
- DL-Lactic Acid, Racemic
- DL-Lactic acid
- DL-Lactic acid, ~90% (T)
- DL-Milchsaeure
- Dermaplex
- Dermaplex Pre-Post
- Dermaplex PrePost JPN
- DiOxi Star Pre-Post Activator
- Encore Pre/Post
- EpiStar Barrier Activator
- EpiStar Pre-Post Activator
- Ethylidenelactic acid
- ExfoliatingGel
- Fresh Morning Bifidus
- Fresh Morning Bifidus Bifidus
- GEA Velocity Part A
- Gladiator Barrier Activator
- Gladiator PostMax Activator
- Gladiator Pre-Post Activator
- Gladiator PrepMax Activator
- HIPURE 88
- INS NO.270
- Integrity Blue Part A
- Integrity Pre-Post Part A
- Kyselina 2-hydroxypropanova
- Kyselina mlecna
- Kyselina mlecna [Czech]
- L-isomer
- Lactate (Standard)
- Lactate, Ammonium
- Lactic Acid Pre Dip
- Lactic Acid Teat Dip
- Lactic Acid, 85 Percent
- Lactic acid (7CI,8CI)
- Lactic acid (natural)
- Lactic acid, dl-
- Lactic acid, tech grade
- Lactic acid, unspecified
- Lactic acid,buffered
- LacticPlus
- Lacticum acidum
- Lactovagan
- Lurex
- Milchsaeure
- Milchsaure
- Milchsaure [German]
- Milk acid
- Non-Iodine Barrier Teat Dip
- Non-Iodine Teat Dip
- Opti-Guard Activator
- Orbit Clean Activator
- Ordinary lactic acid
- PLA, PLLA, Polylactide
- PREP 8X4 CONC
- PREP 8X8
- Prep 8X RTU
- Pro-San Activator
- Pro-San LV Activator
- Pro-San LV Plus Activator
- Propanoic acid, (+-)
- Propanoic acid, 2-hydroxy-
- Propanoic acid, hydroxy-
- Propionic acid, 2-hydroxy-
- Purac FCC 80
- Purac FCC 88
- Racemic lactic acid
- Sodium Chlorite Teat Dip
- Soft Chlor Barrier Part A
- Soft Chlor Part A
- Soft-San
- Synofilm
- Synoshield
- Tonsillosan
- UdderStar PrePost Activator
- Uddercare Barrier Part A
- Uddercare Plus Part A
- Udderstar Barrier Activator
- Ultra-Guard Activator
- Ultra-Guard HV Activator
- Valiant Express Prime
- XT Barrier BLU Part A
- XT-1 Pre-Post Part A
- XTRA 7 PART A
- XTRA BLU Conc. Part A
- XTRA GUARD (Part A)
- Xtra BLU Part A
- alpha-Hydroxypropanoic acid
- alpha-Hydroxypropionic acid
- hydron;2-hydroxypropanoate
- lactasol
- lactic acid
- poly(2-hydroxypropionic acid)
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