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HomeProduct name list2,4-Diaminophenol dihydrochloride

2,4-Diaminophenol dihydrochloride

Synonym(s):‘Amidol’;4-Hydroxy-1,3-phenylenediammonium dichloride;Amidol, 2,4-Diaminophenol dihydrochloride, Phenol-2,4-diammonium dichloride, 1-Hydroxybenzene-2,4-diammonium dichloride

  • CAS NO.:137-09-7
  • Empirical Formula: C6H10Cl2N2O
  • Molecular Weight: 197.06
  • MDL number: MFCD00012979
  • EINECS: 205-279-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-07-11 19:21:31
2,4-Diaminophenol dihydrochloride Structural

What is 2,4-Diaminophenol dihydrochloride?

Chemical properties

Grey white powder

The Uses of 2,4-Diaminophenol dihydrochloride

2,4-Diaminophenol dihydrochloride (Amidol) is used in the dye manufacturing industries and as a color accelerator in photographic developers. It is also employed as a pharmaceutical intermediate.

The Uses of 2,4-Diaminophenol dihydrochloride

A trade name for diamidophenol, a developing agent for silver bromide gelatin emulsions that was introduced by Dr. Anderson in 1892. Amidol made negatives grayish black, with very little fog. It was favored over other alkaline developers because it could facilitate faster exposures.

The Uses of 2,4-Diaminophenol dihydrochloride

2,4-Diaminophenol dihydrochloride (Amidol) was used in the dye manufacturing industries and as a color accelerator in photographic developers.

General Description

Grayish-white crystals.

Air & Water Reactions

Water soluble.

Reactivity Profile

Sensitive to heat and light. Incompatible with acids.

Fire Hazard

Flash point data for 2,4-Diaminophenol dihydrochloride are not available. 2,4-Diaminophenol dihydrochloride is probably combustible.

Properties of 2,4-Diaminophenol dihydrochloride

Melting point: 222 °C (dec.)(lit.)
Density  1.3457 (rough estimate)
refractive index  1.5680 (estimate)
storage temp.  Store below +30°C.
solubility  275g/l
form  Crystalline Powder
color  Beige to gray-green
PH 1-2 (50g/l, H2O, 20℃)
Water Solubility  27.5 g/100 mL (15 ºC)
Merck  14,2983
BRN  3913728
Stability: Stable. Incompatible with strong oxidizing agents, acids. Heat and light sensitive.
CAS DataBase Reference 137-09-7(CAS DataBase Reference)
EPA Substance Registry System 2,4-Diaminophenol dihydrochloride (137-09-7)

Safety information for 2,4-Diaminophenol dihydrochloride

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
GHS Hazard Statements H301:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
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 2,4-Diaminophenol dihydrochloride

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