HomeProducts
Amines REACH

Hexadecyltrimethylammonium chloride

CAS Number
112-02-7
EC Number
203-928-6
Chemical Formula
C19H42N.Cl
Molecular Weight
320.0 g/mol

Description

Hexadecyltrimethylammonium chloride ( CAS 112-02-7 ), commonly known as CTAC or cetyltrimethylammonium chloride, is a cationic quaternary ammonium surfactant used across personal care, pharmaceutical, and industrial water treatment sectors. Its positive charge enables strong adsorption onto negatively charged surfaces, driving its use as a conditioning agent, emulsifier, and biocide. In hair care formulations, it is a primary conditioning active in rinse-out conditioners. The material deposits onto damaged hair fiber to reduce static and improve combability. Pharmaceutical manufacturers use it as an antimicrobial preservative and surface-active agent in topical creams, lotions, and ophthalmic preparations. Water treatment operations employ it as a biocidal agent to control microbial growth in cooling towers and industrial process water. In fabric softeners and textile finishing, it functions as an antistatic and softening agent. Hexadecyltrimethylammonium chloride is supplied as an aqueous solution, typically at 25–30% active content. It is also available as a white to off-white powder or flakes for applications requiring dry handling. Cosmetic-grade and technical-grade specifications are the most commercially available. Cosmetic grades are subject to purity requirements aligned with PCPC and Ph. Eur. standards to ensure safety and efficacy. Packaging ranges from drums to IBC totes for liquid grades, with bags available for solid forms. This versatile chemical remains a staple for formulators seeking reliable surface modification and antimicrobial properties. Contact us for supply of Hexadecyltrimethylammonium chloride Request Quote

Other Names (Synonyms)

Cetyltrimethyl ammonium chloride | Hexadecyl(trimethyl)azanium chloride | Cetrimonium chloride | CTAC

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point2 °C
Boiling Point475.54°C (rough estimate)
Density0.88 g/cm³ @ Temp: 60 °C
AppearanceLiquid
ColorWhite
Odorat 100.00?%. bland
FormAmorphous Powder
Water SolubilitySoluble
Vapor Pressure0.006Pa at 25℃
Refractive Indexn 20/D 1.3778
pHpH(50g/l, 25℃) : 6.0~8.5
Log P3.08 at 25℃

Safety & Handling

Danger
GHS05· CorrosiveGHS06· ToxicGHS07· IrritantGHS09· Environment

Hazard Statements

H302Harmful if swallowed
H311Toxic in contact with skin
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P262Do not get in eyes, on skin, or on clothing.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off immediately all contaminated clothing and wash it before reuse.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29239000
UN Number3082
ADR Class9
Packing GroupIII
WGK (Germany)3