4-Methylaminophenol sulfate
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4-Methylaminophenol sulfate
structure -
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CAS No:
55-55-0
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Formula:
C7H11NO5S
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Chemical Name:
4-Methylaminophenol sulfate
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Synonyms:
METOL(TM);BIS-(N-METHYL-4-HYDROXYANILINIUM) SULFATE;ARMOL;ELON;ECOL(R);GENOL;PHOTO-REX(R);PICTOL(TM)
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CAS No:
Description
White crystalline powder
Metol is contained in black-and-white film developers and caused contact dermatitis in photographers.
ChEBI: The sulfate salt of 4-methylaminophenol.
Off-white crystalline solid. Sensitive to light.
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.]
4-Methylaminophenol sulfate Basic Attributes
221.23
221.035797
3919382
200-237-1
148345
TSCA listed
white to faintly beige
29222900
Characteristics
115.24000
1.93490
white to faintly beige Powder
1.577
260 °C (dec.)(lit.)
262.7ºC at 760 mmHg
148.6ºC
1.6510 (estimate)
50 g/L (20 ºC)
−20°C
3.5-4.5 (20°C, 50g/L in H2O)
Water soluble.
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.
989 °F
−20°C
Safety Information
III
6.1
UN 3077 9/PG 3
3
Xn,N
36/37-46-60-61
SL8650000
Xn,N
Stability Combustible. Incompatible with strong oxidizing agents, acids, acid halides.
P260-P280-P301 + P312 + P330
Eye and skin irritant.
UN 3077 9/PG 3
Flash point data for 4-Methylaminophenol sulfate are not available but 4-Methylaminophenol sulfate is probably combustible.
|Warning|H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]|P260, P261, P264, P270, P272, P273, P280, P301+P312, P302+P352, P314, P321, P330, P333+P313, P363, P391, and P501|The GHS information provided by 1 company from 1 notification to the ECHA C&L Inventory.
Metol is contained in black and white film developers and caused contact dermatitis in photographers.
4-Methylaminophenol sulfate Use and Manufacturing
P-aminophenol can be prepared by methylation or hydroquinone and methylamine reaction to produce methylaminophenol ([150-75-4]), and then by salt formation.
Photographic developer; dyeing furs.
Metol is a black-and-white photographic developer; dyeing furs; as pigment in hair dyes.
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.
4-methylaminophenol sulfate is used as a photographic developer and fur dye.
Computed Properties
Molecular Weight:221.23
Hydrogen Bond Donor Count:4
Hydrogen Bond Acceptor Count:6
Rotatable Bond Count:1
Exact Mass:221.03579362
Monoisotopic Mass:221.03579362
Topological Polar Surface Area:115
Heavy Atom Count:14
Complexity:158
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
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