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HomeProduct name list4-Methylaminophenol sulfate

4-Methylaminophenol sulfate

Synonym(s):p-(Methylamino)phenol hemisulfate salt;4-(Methylamino)phenol hemisulfate salt;Metol

  • CAS NO.:55-55-0
  • Empirical Formula: C7H11NO5S
  • Molecular Weight: 221.23
  • MDL number: MFCD00013140
  • EINECS: 200-237-1
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-09-05 22:20:32
4-Methylaminophenol sulfate Structural

What is 4-Methylaminophenol sulfate?

Description

Metol is contained in black-and-white film developers and caused contact dermatitis in photographers.

Chemical properties

White crystalline powder

The Uses of 4-Methylaminophenol sulfate

4-methylaminophenol sulfate is used as a photographic developer and fur dye.

The Uses of 4-Methylaminophenol sulfate

Photographic developer; dyeing furs.

The Uses of 4-Methylaminophenol sulfate

Metol is a black-and-white photographic developer; dyeing furs; as pigment in hair dyes.

The Uses of 4-Methylaminophenol sulfate

4-(Methylamino)phenol sulfate is a photographic developer used in black and white photography. It is also used as tone developers in developing agents. Further, it is used in oxidative hair dye formulations.

Definition

ChEBI: The sulfate salt of 4-methylaminophenol.

General Description

Off-white crystalline solid. Sensitive to light.

Air & Water Reactions

Water soluble.

Reactivity Profile

In aqueous solution behaves as an acid. Materials in this group are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions.

Hazard

Eye and skin irritant.

Fire Hazard

Flash point data for 4-Methylaminophenol sulfate are not available but 4-Methylaminophenol sulfate is probably combustible.

Contact allergens

Metol is contained in black and white film developers and caused contact dermatitis in photographers.

Purification Methods

Crystallise this photographic developer from H2O (needles m 250-260o) (its solubility is 5% at 20o and 17% at 100o) or MeOH. It is used for determining Ag. [Palit et al. Indian J Chem, Sect B 28 64 1989.]

Properties of 4-Methylaminophenol sulfate

Melting point: 260 °C (dec.)(lit.)
Density  1.577
refractive index  1.6510 (estimate)
storage temp.  −20°C
solubility  H2O: 50 mg/mL, clear
form  Powder
color  white to faintly beige
Water Solubility  50 g/L (20 ºC)
Sensitive  Air Sensitive
Merck  14,6017
BRN  3919382
Stability: Stability Combustible. Incompatible with strong oxidizing agents, acids, acid halides.
CAS DataBase Reference 55-55-0(CAS DataBase Reference)
EPA Substance Registry System p-Methylaminophenol sulfate (55-55-0)

Safety information for 4-Methylaminophenol sulfate

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
ghs
Environment
GHS09
GHS Hazard Statements H302:Acute toxicity,oral
H317:Sensitisation, Skin
H373:Specific target organ toxicity, repeated exposure
H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P314:Get medical advice/attention if you feel unwell.
P302+P352:IF ON SKIN: wash with plenty of soap and water.

Computed Descriptors for 4-Methylaminophenol sulfate

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