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HomeProduct name list4-Chlororesorcinol

4-Chlororesorcinol

Synonym(s):1,3-Dihydroxy-4-chlorobenzene

  • CAS NO.:95-88-5
  • Empirical Formula: C6H5ClO2
  • Molecular Weight: 144.56
  • MDL number: MFCD00002273
  • EINECS: 202-462-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-11-01 18:09:03
4-Chlororesorcinol Structural

What is 4-Chlororesorcinol?

Chemical properties

4-Chlororesorcinol is a colorless crystals or off-white to light brown powder. The melting point is 89°C (106.5-107.5°C), the boiling point is 259°C, 147°C (2.4kPa). Soluble in water, alcohol, ether, benzene and carbon disulfide. Can sublimate. It reacts with ferric chloride to generate blue-purple.

The Uses of 4-Chlororesorcinol

4-Chlororesorcinol, can be used as hair dye formulation. It can also be used in the synthesis of series of six coumarin compounds carrying halogen and trifluoromethyl, having antifungal activities.

What are the applications of Application

In cosmetics and personal care products, 4-Chlororesorcinol is used in the formulation of hair dyes, colors and tints.
4-Chlororesorcinol is used in permanent hair coloring systems where color is produced inside the hair fiber. This is accomplished through careful formulation of the product so that the ingredients interact in a highly controlled process.

Preparation

4-Chlororesorcinol is synthesized by reacting resorcinol with dichlorosulfuryl. Resorcinol and diethyl ether were mixed, heated to reflux with stirring, and dichlorosulfuryl was slowly added dropwise. The temperature was then raised to 60°C for 1 h. After recovery of ether, atmospheric distillation is carried out, the distillate is subjected to vacuum distillation again, and the 131°C (0.8-0.93kPa) or 160-164°C (4.0kPa) fractions are collected to obtain the finished 4-chlororesorcinol.

Flammability and Explosibility

Non flammable

Safety

4-chlororesorcinol is classified as a toxic substance and exposure to high concentration of 4-chlororesorcinol could cause several health issues including, skin irritation, serious eye irritation, and other hazards.
The safety of 4-Chlororesorcinol has been assessed by the Cosmetic Ingredient Review (CIR) Expert Panel. The CIR Expert Panel evaluated the scientific data and concluded that 4-Chlororesorcinol was safe in hair dye formulations.
The CIR Expert Panel concluded that the scientific data suggested that 4-Chlororesorcinol can be safely used in hair dye products. Subchronic dermal exposure to a hair dye product containing 2% 4-Chlororesorcinol produced no evidence of compound-induced toxicity. At the same concentration, no development effects, no evidence of reproductive toxicity, and no carcinogenic effects were seen following dermal exposure. Likewise, 4-Chlororesorcinol was not mutagenic in either a micronucleus or in bacteria, nor did it induce aneuploidy in fungus cells. A 2.5% solution was not a dermal irritant or an ocular irritant.

Purification Methods

Crystallise it from boiling CCl4 (10g/L, charcoal) and dry it in air. [Beilstein 6 II 818.] IRRITANT.

Properties of 4-Chlororesorcinol

Melting point: 106-108 °C (lit.)
Boiling point: 147 °C/18 mmHg (lit.)
Density  1.2558 (rough estimate)
vapor pressure  0.16Pa at 25℃
refractive index  1.4620 (estimate)
Flash point: 146-148°C/18mm
storage temp.  Keep in dark place,Inert atmosphere,Room temperature
solubility  >1000g/l
form  Powder
pka 8.28±0.10(Predicted)
color  Beige
PH 3.8 (10g/l, H2O, 30℃)
Water Solubility  soluble
BRN  2042864
Stability: Stable. Incompatible with acid chlorides, acid anhydrides, oxidizing agents.
CAS DataBase Reference 95-88-5(CAS DataBase Reference)
NIST Chemistry Reference 1,3-Benzenediol, 4-chloro-(95-88-5)
EPA Substance Registry System 4-Chlororesorcinol (95-88-5)

Safety information for 4-Chlororesorcinol

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H317:Sensitisation, Skin
H318:Serious eye damage/eye irritation
H412:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 4-Chlororesorcinol

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