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Merck

1.07299

4-(Methylamino)phenol sulfate

Technipur®

Synonym(s):

4-(Methylamino)phenol hemisulfate salt, N-Methyl-p-aminophenol sulphate, p-Methyl aminophenol sulfate, Metol

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About This Item

Linear Formula:
C7H9NO · 1/2H2SO4
CAS Number:
55-55-0
Molecular Weight:
172.19
NACRES:
NA.05
UNSPSC Code:
12352100
Beilstein/REAXYS Number:
3919382
MDL number:
MFCD00013140

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SMILES string

OS(O)(=O)=O.CNc1ccc(O)cc1.CNc2ccc(O)cc2

InChI key

ZVNPWFOVUDMGRP-UHFFFAOYSA-N

InChI

1S/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)

autoignition temp.

989 °F

pH

3.5-4.5 (20 °C, 50 g/L in H2O)

mp

260 °C (dec.) (lit.)

Quality Level

200

General description

4-(Methylamino)Phenol Sulfate, a substituted phenol, is an aromatic reducing agent, majorly used as a hair dye and a monochrome photographic developer chemical.

Application

4-(Methylamino)Phenol Sulfate can be used as a corrosion inhibitor. It is used as a reagent in several reactions employed to determine the levels of contaminants and drugs by various means, particularly by electrochemical or spectrophotometric methods. 4-(Methylamino)Phenol Sulfate is also used as an organic reducing agent to prepare silver nanomaterials.

Legal Information

Technipur is a registered trademark of Merck KGaA, Darmstadt, Germany

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Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Skin Sens. 1 - STOT RE 2

wgk

WGK 3

flash_point_f

494.6 °F - closed cup

flash_point_c

257 °C - closed cup

Storage Class

11 - Combustible Solids

Certificates of Analysis (COA)

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Catalytic Determination of Vanadium Based on the
Bromate Oxidative-Coupling Reaction
of Metol with Phloroglucinol
Mohamed AA and Fawy KF
Mikrochimica Acta, 134, 229-235 (2000)
Spectrophotometric Determination of Naproxen using Metol reagent by Oxidative Coupling Reaction
Ghania Abed Hasan GA and Bakir MH
IOP Conference Series: Materials Science and Engineering, 1058, 012079-012079 (2021)
Room temperature synthesis of silver nanowires from tabular silver bromide crystals in the presence of gelatin
Liu S, et al.
Journal of Solid State Chemistry, 179(3), 696-701 (2006)
Metol as Corrosion Inhibitor for zinc
Praveen BM, et al.
Transactions of the Indian Institute of Metals, 65, 297-302 (2012)
Correction to Active-Site-Rich 1T-Phase CoMoSe2 Integrated Graphene Oxide Nanocomposite as an Efficient Electrocatalyst for Electrochemical Sensor and Energy Storage Applications
Ramaraj S, et al.
Analytical Chemistry, 92(2), 2347-2348 (2020)
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