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4-Methylaminophenol sulfate

4-Methylaminophenol sulfate structure

CAS No:
55-55-0
Formula:
C7H11NO5S
Chemical Name:
4-Methylaminophenol sulfate
Synonyms:
METOL(TM);BIS-(N-METHYL-4-HYDROXYANILINIUM) SULFATE;ARMOL;ELON;ECOL(R);GENOL;PHOTO-REX(R);PICTOL(TM)
Categories:
Analytical Chemistry > Standard

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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

Molecular Weight：

221.23

Exact Mass：

221.035797

BRN：

3919382

EC Number：

200-237-1

NSC Number：

148345

TSCA：

TSCA listed

Color/Form：

white to faintly beige

HScode：

29222900

Characteristics

PSA：

115.24000

XLogP3：

1.93490

Appearance：

white to faintly beige Powder

Density：

1.577

Melting Point：

260 °C (dec.)(lit.)

Boiling Point：

262.7ºC at 760 mmHg

Flash Point：

148.6ºC

Refractive Index：

1.6510 (estimate)

Water Solubility：

50 g/L (20 ºC)

Storage Conditions：

−20°C

PH：

3.5-4.5 (20°C, 50g/L in H2O)

Air and 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.

Autoignition Temperature：

989 °F

Critical Temperature & Pressure：

−20°C

Safety Information

Packing level：

III

Hazard category：

6.1

Transport codes：

UN 3077 9/PG 3

wgk germany：

hazard class code：

Xn,N

safety instructions：

36/37-46-60-61

RTECS Number：

SL8650000

Marks：

Xn,N

Stability/Shelf Life：

Stability Combustible. Incompatible with strong oxidizing agents, acids, acid halides.

Precautionary statement(s)：

P260-P280-P301 + P312 + P330

Hazard Statements：

Eye and skin irritant.

RIDADR：

UN 3077 9/PG 3

Fire Hazards：

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

GHS Classification：

|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.

Exposure Prevention：

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

4-Methylaminophenol sulfate Use and Manufacturing

Methods of Manufacturing

P-aminophenol can be prepared by methylation or hydroquinone and methylamine reaction to produce methylaminophenol ([150-75-4]), and then by salt formation.

Uses

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

Material

4-Aminophenol

Dimethyl sulfate

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Guide of 4-Methylaminophenol sulfate

Description
Basic Attributes
Characteristics
Safety Information
Use and Manufacturing
Computed Properties
Material
Recommended Suppliers
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4-Methylaminophenol sulfate

SDS

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