Agent Name

Benzyldimethylstearylammonium chloride

CAS Number




Major Category

Nitrogen Compounds


2B; 2B (onium compound); Algene SC 25; Alkaquat DMB-ST; Ammonium, benzyldimethyloctadecyl-, chloride; Ammonyx 4; Ammonyx 4002; Ammonyx 485; Ammonyx 490; Ammonyx CA special; Arquad DM18B-90; Barquat SB-25; Benzenemethanaminium, N,N-dimethyl-N-octadecyl-, chloride; Benzyldimethyloctadecylammonium chloride; Benzyloctadecyldimethylammonium chloride; Benzylstearyldimethylammonium chloride; Carsoquat sdq-25; Carsoquat sdq-85; Cation S (surfactant); Dimethyl(N-octadecylphenylmethyl)ammonium chloride; Dimethylbenzyloctadecylammonium chloride; Dimethyloctadecylbenzylammonium chloride; Incroquat SDQ 25; Intexan SB-85; Intexsan SB-85; J Soft C 4; Larostat HTS 905; Mackernium SDC 25; Mackernium SDC 85; Maquat SC 18; N-Octadecyl-N-benzyl-N,N-dimethylammonium chloride; Nissan cation S2-100; Octadecylbenzyldimethylammonium chloride; Octadecyldimethylbenzylammonium chloride; Orthosan MB; Quaternol 1; SDQ 25; SDQ 85; Stearalkonium chloride; Stearyldimethylbenzylammonium chloride; Stebac; Stedbac; Swanol CA 1485; Tallow benzyl dimethyl ammonium chloride; Triton CG 400; Triton CG 500; Triton X-40; Triton X-400; Varisoft SDC 85; [ChemIDplus]


Quaternary Amines


White solid or viscous liquid; [HSDB] White crystalline powder; [MSDSonline]


Used as a cationic surfactant, wetting agent, emulsifier, germicide, fungicide, disinfectant, and slimicide; Used in industrial cleaners, emulsion polymerization processes, paper and textile processing, hair colors and conditioners (softener), lipsticks and lotions (emollient), textiles (softener), hair sprays (antistatic agent), and contraceptive formulations; [HSDB] Quaternary ammonium compounds are also used as algaecides/slimicides (swimming pools, industrial water reservoirs, and farm ponds), antiseptics for cleaning wounds, antistatic agents for textiles, softeners for paper products, and pigment dispersers; [IPCS-PIMs]


A skin and eye irritant; May damage eyes; [HSDB] Allergic contact dermatitis is infrequently documented for quaternary ammonium compounds; [Marks, p. 266] Quaternary ammonium compounds have curare-like properties when concentrated solutions are ingested; Affected patients may have methemoglobinemia and hemolysis and die within 1-3 hours; Elevated liver function tests were reported; Concentrated solutions can cause burns; No data on carcinogenicity or teratogenicity; [IPCS-PIMs] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; [MSDSonline] See "Benzalkonium chloride."

Exposure Assessment
Lethal Concentration

LC50 (rat) = 3,280 mg/m3/4h

Adverse Effects
Skin Sensitizer



Other CNS Neurotoxin


Hepatotoxin, Secondary


Methemoglobinemia, Secondary


Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

Search ChemIDplus

Related Information in HazMap

Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: