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4-Methylaminophenol sulfate
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Name

4-Methylaminophenol sulfate

 EINECS 200-237-1
CAS No. 55-55-0 Density 1.577
PSA 115.24000 LogP 1.93490
Solubility 50 g/L (20 ºC) Melting Point 260 °C
Formula 2(C7H9NO).H2SO4 Boiling Point 262.7 °C at 760 mmHg
Molecular Weight 344.389 Flash Point 148.6 °C
Transport Information N/A Appearance white crystalline powder
Safety 36/37-46-60-61 Risk Codes 22-43-48/22-50/53
Molecular Structure Molecular Structure of 55-55-0 (4-Methylaminophenol sulfate) Hazard Symbols HarmfulXn, DangerousN
Synonyms

N-Methyl-p-aminophenol sulfate;Phenol, p-methylamino-, sulfate (salt);Bis(4-hydroxy-N-methylanilinium) sulphate;Verol;Phenol, 4-(methylamino)-, sulfate salt (2:1);p-Methylaminophenol sulphate (2:1);Elon (VAN);4-(Methylamino)phenol sulfate (2:1) salt;Phenol, p-(methylamino)-, sulfate (2:1) (salt);

Article Data 2

4-Methylaminophenol sulfate Synthetic route

13031-47-5

acetic acid-(4-benzylidenamino-phenyl ester)

77-78-1

dimethyl sulfate

55-55-0

4-(methylamino)phenol sulphate

Conditions
ConditionsYield
at 135℃; Zersetzen mit Wasser und Kochen mit konz.Salzsaeure;
51-78-5

p-aminophenol hydrochloride

77-78-1

dimethyl sulfate

55-55-0

4-(methylamino)phenol sulphate

Conditions
ConditionsYield
Yield given. Multistep reaction;
55-55-0

4-(methylamino)phenol sulphate

18162-48-6

tert-butyldimethylsilyl chloride

90446-71-2

4-((tert-butyldimethylsilyl)oxy)-N-methylaniline

Conditions
ConditionsYield
With sodium hydride In tetrahydrofuran at -78℃;97%
50-00-0

formaldehyd

55-55-0

4-(methylamino)phenol sulphate

78-93-3

butanone

1,3,4-trimethyl-6-hydroxyquinolinium perchlorate

Conditions
ConditionsYield
With perchloric acid In nitrobenzene; butan-1-ol at 95℃; for 7h;79.8%
108-24-7

acetic anhydride

55-55-0

4-(methylamino)phenol sulphate

579-58-8

N-methyl-(4-acetamido)phenol

Conditions
ConditionsYield
In water for 0.0333333h; Heating;73%
55-55-0

4-(methylamino)phenol sulphate

530-62-1

1,1'-carbonyldiimidazole

186393-31-7

(3R,4R)-pyrrolidine-3,4-diol

(3R,4R)-3,4-Dihydroxy-pyrrolidine-1-carboxylic acid (4-hydroxy-phenyl)-methyl-amide

Conditions
ConditionsYield
Multistep reaction;67%
40499-83-0

pyrrolidin-3-ol

55-55-0

4-(methylamino)phenol sulphate

530-62-1

1,1'-carbonyldiimidazole

3-hydroxy-pyrrolidine-1-carboxylic acid (4-hydroxy-phenyl)-methyl-amide

Conditions
ConditionsYield
Multistep reaction;63%
55-55-0

4-(methylamino)phenol sulphate

40499-83-0, 83220-72-8, 100243-39-8, 2799-21-5

(3R)-pyrrolidinol

530-62-1

1,1'-carbonyldiimidazole

(R)-3-Hydroxy-pyrrolidine-1-carboxylic acid (4-hydroxy-phenyl)-methyl-amide

Conditions
ConditionsYield
Multistep reaction;60%
96-42-4

pyrrolidin-3-one

55-55-0

4-(methylamino)phenol sulphate

530-62-1

1,1'-carbonyldiimidazole

3-oxo-pyrrolidine-1-carboxylic acid (4-hydroxy-phenyl)-methyl-amide

Conditions
ConditionsYield
Multistep reaction;48%

C23H32ClN2Si(1+)

55-55-0

4-(methylamino)phenol sulphate

C30H40N3OSi(1+)

Conditions
ConditionsYield
Stage #1: 4-(methylamino)phenol sulphate With triethylamine In acetonitrile for 0.5h;
Stage #2: C23H32ClN2Si(1+) In acetonitrile for 0.0833333h;		29%

4-Methylaminophenol sulfate Chemical Properties


IUPAC Name: 4-(Methylamino)phenol sulfate
Molecular Formula: (C7H10NO)2SO4
Molecular Weight: 344.38 g/mol
Canonical SMILES: S(O)(O)(=O)=O.c1(ccc(O)cc1)NC.c1(ccc(O)cc1)NC
InChI: InChI=1/2C7H9NO.H2O4S/c2*1-8-6-2-4-7(9)5-3-6;1-5(2,3)4/h2*2-5,8-9H,1H3;(H2,1,2,3,4)
EINECS: 200-237-1
Classification Code: Mutation data
Product Categories: Industrial/Fine Chemicals; Pharmaceutical Raw Materials
Sensitive: Air Sensitive
Density: 1.577
Flash Point: 148.6 °C 
Enthalpy of Vaporization: 52.07 kJ/mol 
Boiling Point: 262.7 °C at 760 mmHg 
Melting Point: 260 °C (dec.)(lit.)
Storage temperature: -20 °C
Solubility: H2O: 50 mg/mL, clear
Water Solubility: 50 g/L (20 °C) 
Vapour Pressure of p-Methylaminophenol sulfate (CAS NO.55-55-0): 0.00658 mmHg at 25 °C

4-Methylaminophenol sulfate Uses

 p-Methylaminophenol sulfate (CAS NO.55-55-0) is an excellent developing agent for most continuous tone developer applications, and it has been widely used in published developer formulas as well as commercial products.

4-Methylaminophenol sulfate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 skin > 1gm/kg (1000mg/kg)   Kodak Company Reports. Vol. 21MAY1971,
guinea pig LD50 unreported 1585mg/kg (1585mg/kg) BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
LUNGS, THORAX, OR RESPIRATION: DYSPNEA
BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)		 Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(9), Pg. 87, 1984.
mouse LD50 oral 565mg/kg (565mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)
BEHAVIORAL: TREMOR
KIDNEY, URETER, AND BLADDER: OTHER CHANGES IN URINE COMPOSITION		 National Technical Information Service. Vol. OTS0570966,
mouse LD50 unreported 769mg/kg (769mg/kg) BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)
LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(9), Pg. 87, 1984.
rat LD50 unreported 705mg/kg (705mg/kg) BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX)
BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)
LUNGS, THORAX, OR RESPIRATION: DYSPNEA		 Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 49(9), Pg. 87, 1984.
rat LDLo intraperitoneal 50mg/kg (50mg/kg)   Kodak Company Reports. Vol. 21MAY1971,
rat LDLo oral 200mg/kg (200mg/kg)   Kodak Company Reports. Vol. 21MAY1971,

4-Methylaminophenol sulfate Consensus Reports

Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

4-Methylaminophenol sulfate Safety Profile

Poison by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits very toxic fumes of SOx and NOx.
Hazard Codes: HarmfulXn, DangerousN 
Risk Statements: 22-43-48/22-50/53 
R22: Harmful if swallowed. 
R43: May cause sensitization by skin contact. 
R48/22: Harmful: danger of serious damage to health by prolonged exposure if swallowed. 
R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 36/37-46-60-61 
S36/37: Wear suitable protective clothing and gloves. 
S46: If swallowed, seek medical advice immediately and show this container or label. 
S60: This material and its container must be disposed of as hazardous waste. 
S61: Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 3077 9/PG 3
WGK Germany: 3
RTECS: SL8650000
HazardClass: 6.1
PackingGroup: III

4-Methylaminophenol sulfate Specification

 p-Methylaminophenol sulfate (CAS NO.55-55-0), its Synonyms are 4-(Methylamino)phenol sulfate ; Metol ; Paramethylaminophenol sulfate ; Phenol, 4-(methylamino)-, sulfate salt (2:1) ; 4-(Methylamino)phenol sulfate (2:1) salt ; Methyl-p-aminophenol sulfate ; N-Methyl-4-hydroxyaniline hemisulfate ; N-Methyl-p-aminophenol sulfate ; Bis(4-hydroxy-N-methylanilinium) sulphate . It is white crystalline powder.

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