Choline chloride is a quaternary ammonium salt with choline cation and chloride anion.
Definition
Choline chloride is a quaternary ammonium salt with choline cation and chloride anion. It has a role as an animal growth promotant. It is a chloride salt and a quaternary ammonium salt. It contains a choline.
Source: PubChem
US FDA substance register · UNII 45I14D8O27 · registered name Choline chloride · single chemical substance
Cosmetic roles
Safety & regulatory references
- Banned
- Argentina · ASEAN · Brazil · Canada · China · European Union · South Korea · Taiwan · United Kingdom
Source: ASEAN Cosmetic Directive · EU Cosmetics Regulation · MFDS (Korea) cosmetic regulatory information · Taiwan FDA cosmetic ingredients · UK cosmetics regulations (OPSS)
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex II (prohibited substances), entry 168
Restriction II/168
Source: EU CosIng ingredient list
Reviewed by CIR: Safety Assessment of Trimoniums as used in Cosmetics
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name 塩化コリン: 本品は、次の化学式で表される4級アンモニウム塩である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 67-48-1
- EC No.EU chemical inventory number
- 200-655-4
- DTXSIDUS EPA chemical ID
- DTXSID4020325
- DTXCIDUS EPA compound ID
- DTXCID20325
- IUPAC
- 2-Hydroxy-N,N,N-trimethylethan-1-aminium chloride
- Molecular formula
- C5H14ClNO
- Molecular weight
- 139.62 g/mol
Measured properties
- Appearance
- Choline chloride appears as white crystals. Practically neutral aqueous solution. (NTP, 1992) · Dry Powder, Liquid
- Melting point
- 577 to 581 °F (Decomposes) (NTP, 1992) · 305 °C (decomposes)
- Solubility
- Very soluble (NTP, 1992) · Very sol in water and alcohol
- Stability
- Keep tightly closed.
- pH
- 4.7 (10% SOLN IN WATER) · 4.7
- Colour
- white
- Flammability (solid, gas)
- combustible
- Vapour pressure
- 0 ㎩ (@ 25 ℃)
- Vapour density
- 4.82
- Relative density
- 1.1
- n-Octanol/water partition coefficient (Kow)
- -3.77 (at 25 ℃)
- Auto-ignition temperature
- 330 ℃
- Decomposition temperature
- 305 ℃
- Viscosity
- 26.2 cP (at 20 ℃)
- Molecular weight
- 139.63
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
What products actually use it for
What the 16 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Stabilizing agent4
- Soil amendments4
- Processing aids not otherwise specified2
- Flavouring and nutrient1
- Humectant1
- Anti-static agent1
- Surfactant (surface active agent)1
- Softener and conditioner1
1 other uses
- Solvent1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
1 skin studies and 1 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 2 studies
- Category 6.3B (Category 3)
Skin Irritation · Read Across - Category 6.4A (Category 2A)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
- Fractionation of arctic brown algae (Fucus vesiculosus) biomass using choline chloride-based natural deep eutectic solvents · 2026
- Assessment of the feed additive consisting of choline chloride for all animal species for the renewal of its authorisation (Andrés Pintaluba S.A., Taminco B.V., Balchem Italia S.r.l.) · 2025
- CHOLINE CHLORIDE BASED DEEP EUTECTIC SOLVENTS: PHYSICOCHEMICAL PROPERTIES AND SPECTROSCOPIC INSIGHTS · 2024
- Selective Lipophilization of Natural Phenolic Alcohols Induced by In Situ Choline Chloride-Based Natural Deep Eutectic Solvents. · 2024
- Application of Phosphonium- and Choline Chloride Based Deep Eutectic Solvents as Catalyst for Emulsifier Production from Low Quality Oil Assisted by Microwave Irradiation · 2024
Linked databases 25
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- EU CosIng ingredient list 2
- EU Cosmetics Regulation
- EU prohibited substances (Annex II)
- EU SCCS safety opinions 2
- JCIA labelling names (Japan)
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic regulatory information 2 3
- NIST Chemistry WebBook
- PubChem 2
- Taiwan FDA cosmetic ingredients
- Tlooto literature search 2 3 4 5
- UK cosmetics regulations (OPSS)
- UniChem cross-reference IDs
- US Cosmetic Ingredient Review (CIR) 2
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · English · Japanese · Chinese