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(CAS RN:123-31-9 Product Number:H0186)


Synonym 1,4-Dihydroxybenzene
Synonym HQ
Synonym Quinol

General Information

Product Number H0186

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Purity/Analysis Method >99.0%(T)
Storage Temperature
M.F. / M.W. C6H6O2=110.11
CAS RN 123-31-9
Related CAS RN
MDL Number MFCD00002339
Packaging and Container


[Handling Notes]
This product is handled and stored under inert gas with protect from light, but oxidation may still occur to produce black particles. This is normal, and this reagent meets our quality standard specifications.
Please remove black particles prior to use, if needed. It is recommended to use all of the reagent as soon as possible upon receiving it.
  • Product Details
  • Safety & Regulations


Purity(Redox method) min. 99.0 %
Melting point 172.0 to 176.0 deg-C
Solubility in dilute Acetic acid transparency
Ignition residue(Sulfate) max. 0.02 %
Chlorine max. 0.01 %
Sulfate max. 0.01 %
Lead max. 0.001 %
Iron max. 0.001%
Catechole max. 0.3%

Data of Reference

bp 282°C(lit.)


Beilstein 6,836
Reaxys-RN 605970
PubChem SID 87570618
Merck Index(14) 4808
F&F 5,341
RTECS# MX3500000
EC Number 204-617-8


Signal Word Danger
Hazard Statements
  • H302
  • :Harmful if swallowed.
  • H317
  • :May cause an allergic skin reaction.
  • H318
  • :Causes serious eye damage.
  • H341
  • :Suspected of causing genetic defects.
  • H351
  • :Suspected of causing cancer.
  • H400
  • :Very toxic to aquatic life.
Precautionary Statements
  • P261
  • :Avoid breathing dust/fume/gas/mist/vapours/spray.
  • P270
  • :Do not eat, drink or smoke when using this product.
  • P280
  • :Wear protective gloves, protective clothing, face protection.
  • P302+P352+P333+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of soap and water. If skin irritation or rash occurs: Take off contaminated clothing. And wash it before reuse.
  • P305+P351+P338+P310
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor.
  • P308+P313
  • :IF exposed or concerned: Get medical advice or attention.

Transport Information

UN Number 3077
Class 9
Packing Group III
HS Number 2907220010


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