ChemicalBook > CAS DataBase List > 4-Chlorobenzene-1,2-diol

4-Chlorobenzene-1,2-diol

Product Name
4-Chlorobenzene-1,2-diol
CAS No.
2138-22-9
Chemical Name
4-Chlorobenzene-1,2-diol
Synonyms
AIDS-017780;Chlorocatechol;4-CHLOROCATECHOL;4-CHLOROCATHECOL;4-chloro-pyrocatecho;4-MONOCHLOROCATECHOL;4-Chlorocatechol 97%;4-Chlorocatechol >Glycerol Impurity 76;4-CHLOROCATECHOL 98+%
CBNumber
CB2668875
Molecular Formula
C6H5ClO2
Formula Weight
144.56
MOL File
2138-22-9.mol
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4-Chlorobenzene-1,2-diol Property

Melting point:
90-94 °C (lit.)
Boiling point:
140°C 10,5mm
Density 
1.2558 (rough estimate)
refractive index 
1.4620 (estimate)
storage temp. 
Inert atmosphere,Room Temperature
solubility 
Chloroform (Slightly), Methanol (Slightly)
form 
powder to crystal
pka
8.84±0.10(Predicted)
color 
White to Light yellow to Light orange
InChIKey
WWOBYPKUYODHDG-UHFFFAOYSA-N
CAS DataBase Reference
2138-22-9(CAS DataBase Reference)
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Safety

Hazard Codes 
C
Risk Statements 
34
Safety Statements 
26-36/37/39-45
RIDADR 
UN 1759 8/PG 2
WGK Germany 
3
RTECS 
UX1490000
HazardClass 
8
PackingGroup 
II
HS Code 
29081990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P363Wash contaminated clothing before reuse.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
148520
Product name
4-Chlorocatechol
Purity
97%
Packaging
1g
Price
$128
Updated
2025/07/31
TCI Chemical
Product number
C0568
Product name
4-Chlorocatechol
Purity
>98.0%(GC)
Packaging
5g
Price
$192
Updated
2025/07/31
TCI Chemical
Product number
C0568
Product name
4-Chlorocatechol
Purity
>98.0%(GC)
Packaging
25g
Price
$574
Updated
2025/07/31
TRC
Product number
C381100
Product name
4-Chloropyrocatechol
Packaging
10g
Price
$800
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
HCH0013158
Product name
4-CHLOROCATECHOL
Purity
95.00%
Packaging
1G
Price
$698.91
Updated
2021/12/16
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4-Chlorobenzene-1,2-diol Chemical Properties,Usage,Production

Uses

4-chlorocatechol was a major degradation product of 4-chloro-2-aminophenol (4C2AP)1. The degradation of 4-chlorocatechol was catalyzed by cphA-I enzyme2.

Definition

ChEBI: A chlorocatechol that is catechol substituted by a chloro group at position 4.

Synthesis Reference(s)

Tetrahedron Letters, 33, p. 865, 1992 DOI: 10.1016/S0040-4039(00)91561-2

General Description

4-chlorocatechol was a major degradation product of 4-chloro-2-aminophenol (4C2AP). The degradation of 4-chlorocatechol was catalyzed by cphA-I enzyme.

4-Chlorobenzene-1,2-diol Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 4-Chlorobenzene-1,2-diol manufacturers

Career Henan Chemical Co
Product
4-Chlorobenzene-1,2-diol 2138-22-9
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100kg
Release date
2019-07-11

2138-22-9, 4-Chlorobenzene-1,2-diolRelated Search:

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  • 4-CHLORO-1,2-DIHYDROXYBENZENE
  • 4-CHLOROCATHECOL
  • 4-CHLOROCATECHOL
  • 4-chloro-2-benzenediol
  • 4-chloro-pyrocatecho
  • Chlorocatechol
  • AIDS-017780
  • 4-MONOCHLOROCATECHOL
  • 4-CHLOROCATECHOL 98+%
  • 4-Chlorobenzene-1,2-diol
  • 2-Hydroxy-4-chlorophenol
  • 4-Chloro-2-hydroxyphenol
  • 4-Chlorocatechol 97%
  • 4-Chlorocatechol &gt
  • 1,2-Benzenediol, 4-chloro-
  • 4-Chlorocatechol in isopropanol
  • C11395300 4-Chlorocatechol
  • Glycerol Impurity 76
  • 2138-22-9
  • C6H5ClO2
  • Organic Building Blocks
  • Polyols
  • Oxygen Compounds
  • Building Blocks
  • Benzenes
  • Organic Building Blocks
  • Oxygen Compounds
  • Polyols
  • Phenol&Thiophenol&Mercaptan
  • Heterocyclic Compounds