Dichlorophene
Synonyms
2,2'-Methylenebis(4-chlorophenol);
Category
Non-ionic surfactant
> Phenol
>> Hydrocarbyl Phenol
Chemical Numbering System
CAS: 97-23-4
EINECS: 202-567-1
Molecular Formula & Molecular Weight
Molecular Formula: C13H10Cl2O2
Molecular Weight: 269.12
Structure
Properties
Appearance (1), solid.
Solubility slightly soluble in water.
Stability stable. Easily oxidized.
Risk Solid form: irritation, irritation to skin, eye, respiratory system.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
dog oral LD50 |
2000mg/kg[1] |
|
guinea pig oral LD50 |
1250mg/kg[1] |
|
mouse oral LD50 |
1000mg/kg[1] |
|
rat intravenous LD50 |
17mg/kg[1] |
|
rat oral LD50 |
1506mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antimicrobial, antibacterial, preservative abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as antimicrobial agent, antibacterial agent, preservative. For example, used in textiles, leather, chemical fiber, woods, personal care products, metalworking fluids.
2, Personal care products
Antimicrobial agent, deodorant in personal care products.
Further information:
(1), In accordance with Safety and Technical Standards for Cosmetics (2015 Edition) of China, be included in the restricted components.
Maximum concentration is 0.5%.
(2), In accordance with EU regulations (EC) No 1223/2009, directive 87/137/EEC, be included in Annex III/11.
Maximum concentration is 0.5%.
Manufacturers
References
[1]: ChemIDplus. 97-23-4, Dichlorophen
Update: 20190908(1)