Surfactants
REACH
Stearyltrimethylammonium chloride
CAS Number
112-03-8
EC Number
203-929-1
Abbreviation
STAC
What is Stearyltrimethylammonium chloride?
Stearyltrimethylammonium chloride (CAS 112-03-8), abbreviated STAC, is a quaternary ammonium cationic surfactant derived from stearic acid.
Where is Stearyltrimethylammonium chloride used?
- Personal care: conditioning agent that deposits onto negatively charged hair and skin for conditioning, detangling and softening in rinse-off and leave-on products
- Textile and leather: fabric softener and fiber lubricant that reduces static charge and improves handle in finishing baths
- Water treatment: biocide against bacteria and algae in industrial cooling systems and process water
- Metalworking and lubricants: emulsifier and anti-corrosion additive that improves stability of cutting fluids and protective coatings
- It also serves as an emulsifier in industrial processing.
Commercial specifications
- Technical and cosmetic grades; cosmetic grade meets purity requirements for personal care
- Packaging from drums to IBC containers depending on grade and concentration
Other Names (Synonyms)
1-Octadecanaminium, N,N,N-trimethyl-, chloride|Trimethylstearylammonium chloride|Stac|Cation AB|Aliquat 7|Nissan cation AB|Quaternium-10|Arquad 18
What are the physical properties of Stearyltrimethylammonium chloride?
Boiling Point 249°C[at 101 325 Pa]
Density 0.91[at 20℃]
Appearance White powder Or Light yellow to white cream
Color White
Form powder to crystal
Water Solubility Soluble in water 1.759 mg/L @ 25°C.
Vapor Pressure 0Pa at 25℃
pH 5.5-8.5 (20℃, 0.05% in H2O)
Log P 3.61 at 25℃
How is Stearyltrimethylammonium chloride classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS09· Environmental Hazard
Hazard Statements
H302 Harmful if swallowed
H311 Toxic in contact with skin
H312 Harmful in contact with skin
H314 Causes severe skin burns and eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
Which trade and regulatory codes apply to Stearyltrimethylammonium chloride?
HS Code 29239000
UN Number 1759
Storage Class 8B - Non-combustible corrosive hazardous materials
WGK (Germany) 3