Cetyl Trimethyl Ammonium Chloride

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Cetyl Trimethyl Ammonium Chloride (CTAC) is a cationic surfactant and quaternary ammonium compound characterized by a long hydrophobic cetyl (C16) alkyl chain and a positively charged ammonium head group. It appears as a white to pale yellow powder or flakes, soluble in water, and exhibits strong surface-active properties. CTAC is widely used in cosmetics, personal care, and industrial applications for its excellent conditioning, antistatic, emulsifying, and disinfectant capabilities. It functions primarily as a fabric softener, hair conditioner, and antimicrobial agent.

Description

Cetyl Trimethyl Ammonium Chloride Uses

Primary Uses 

Cosmetics & Personal Care

  • Acts as a conditioning agent in shampoos, conditioners, and hair treatments to reduce static and improve hair softness and manageability.

  • Used as an emulsifier and stabilizer in creams, lotions, and other topical formulations.

  • Provides antistatic properties in hair styling products and leave-on conditioners.

  • Functions as an antimicrobial preservative and disinfectant in personal hygiene products.

Industrial Applications

  • Employed as a fabric softener and antistatic agent in textile processing and laundry detergents.

  • Used in emulsion polymerization as a surfactant and dispersing agent.

  • Serves as a biocide and disinfectant in water treatment and cleaning products.

 

Secondary Uses 

Pharmaceuticals

  • Occasionally used as an antiseptic or preservative in topical pharmaceutical formulations.

Agriculture

  • Used in certain pesticide formulations as a surfactant to improve spreading and adhesion.

Oil & Gas

Utilized as an emulsifier and corrosion inhibitor in enhanced oil recovery processes and drilling fluids.

PRODUCT KEY FEATURES
  1. Basic Identification Attributes
  • Chemical Name (IUPAC): Hexadecyl(trimethyl)azanium chloride

  • Common/Trade Name: Cetyl Trimethyl Ammonium Chloride, CTAC

  • CAS Number: 112-02-7

  • HS Code: 2923.29.00

  • Molecular Formula: C19H42ClN

  • Molecular Weight: 320.0 g/mol

  • Synonyms:

    • Hexadecyltrimethylammonium chloride

    • CTAC

 

  1. Physical & Chemical Properties
  • Physical State: White to pale yellow granular powder or flakes

  • Color & Odor: White to pale yellow; mild ammonium-like odor

  • Melting Point: ~237°C (decomposes)

  • Boiling Point: Decomposes before boiling

  • Density: ~0.9 g/cm³ (solid form)

  • Solubility:

    • Soluble in water (highly soluble)

    • Insoluble in oils and non-polar solvents

  • pH (1% aqueous): ~5–7

  • Stability: Stable under normal storage conditions; sensitive to strong oxidizers

 

  1. Safety & Hazard Attributes
  • Hazard Class (GHS): Skin irritant and eye irritant (Category 2)

  • NFPA Ratings:

    • Health: 2

    • Flammability: 1

    • Reactivity: 0

  • Exposure Limits: Not specifically established; use appropriate PPE

  • Toxicity: Moderate toxicity; avoid prolonged skin or eye contact

  • Reactivity: Stable; incompatible with strong oxidizing agents

 

  1. Storage & Handling Attributes
  • Storage Conditions: Store in a cool, dry, well-ventilated area away from incompatible substances

  • Container Type: Sealed polyethylene or polypropylene containers

  • Shelf Life: Typically 2–3 years under proper storage

  • Special Handling: Avoid dust formation and contact with eyes and skin; use PPE during handling

 

  1. Regulatory & Compliance Attributes
  • FDA Status: Approved for limited use in cosmetics (as per cosmetic regulations)

  • REACH Status: Registered

  • Transportation: Not classified as hazardous for transport

  • Waste Disposal: Dispose in accordance with local environmental regulations

 

  1. Environmental & Health Impact
  • Ecotoxicity: Toxic to aquatic organisms; avoid release into waterways

  • Persistence: Moderately biodegradable

  • Bioaccumulation: Low potential for bioaccumulation

  • Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic

Biodegradability: Partial biodegradability

SAFETY HANDLING PRECAUTIONS
  • Safety Handling Precautions

  • PPE: Wear gloves, protective goggles, and dust mask when handling powders

  • Handling: Avoid inhalation of dust and contact with skin and eyes

  • Storage: Keep container tightly closed, store away from heat and incompatible materials

  • Hygiene: Wash hands after handling; do not eat, drink, or smoke during use

 

First Aid Measures

  • Inhalation: Move to fresh air immediately; seek medical attention if breathing difficulty occurs

  • Skin Contact: Wash affected area thoroughly with soap and water; seek medical attention if irritation persists

  • Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present; seek medical help

  • Ingestion: Rinse mouth; do not induce vomiting; seek medical advice immediately

 

Firefighting Measures

  • Fire Hazards: Combustible; may produce toxic fumes including nitrogen oxides and hydrogen chloride

  • Extinguishing Media: Use water spray, foam, dry chemical, or COâ‚‚

  • Special Precautions: Firefighters should wear full protective gear and self-contained breathing apparatus

Decomposition Products: Hydrogen chloride, nitrogen oxides, carbon monoxide, carbon dioxide