Pyrocatechol
Synonyms
1,2-Benzenediol;
Catechol;
Category
Non-ionic surfactant
> Phenol
>> Hydrocarbyl Phenol
Chemical Numbering System
CASRN: 120-80-9
EINECS: 204-427-5
Molecular Formula & Molecular Weight
Molecular Formula: C6H6O2
Molecular Weight: 110.11
Structure
Properties
Appearance (1), solid.
Solubility soluble in water.
Stability stable. Easily oxidized.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS (Rev.10) label: 
Animal Toxicity
Table 1 Animal toxicity values
|
cat oral LD50 |
100mg/kg[1] |
|
dog oral LD50 |
130mg/kg[1] |
|
dog intravenous LDLo |
40mg/kg[1] |
|
frog parenteral LDLo |
160mg/kg[1] |
|
frog subcutaneous LDLo |
160mg/kg[1] |
|
guinea pig oral LD50 |
210mg/kg[1] |
|
guinea pig intraperitoneal LDLo |
150mg/kg[1] |
|
guinea pig subcutaneous LDLo |
200mg/kg[1] |
|
mouse intraperitoneal LD50 |
68mg/kg[1] |
|
mouse oral LD50 |
260mg/kg[1] |
|
mouse subcutaneous LD50 |
247mg/kg[1] |
|
rabbit skin LD50 |
800mg/kg[1] |
|
rabbit oral LDLo |
200mg/kg[1] |
|
rabbit subcutaneous LDLo |
225mg/kg[1] |
|
rat oral LD50 |
260mg/kg[1] |
|
rat subcutaneous LDLo |
110mg/kg[1] |
Reproductive effect[1].
Overall carcinogenic evaluation: Group 2B[1].
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent anti-oxidizing, dispersing 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.
Major Uses
1, Typical applications
Use as antioxidant.
Use as intermediate in organic synthesis.
Use as wood preservative.
Manufacturers
References
[1]: ChemIDplus. 120-80-9, Catechol
Update: 20190908(1)