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69750

Sigma-Aldrich

Metol

purum, for photographic purposes, ≥98.0% (HPLC)

Synonym(s):
4-(Methylamino)phenol hemisulfate salt, Metol
Linear Formula:
C7H9NO · 1/2H2SO4
CAS Number:
Molecular Weight:
172.19
Beilstein:
3919382
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

grade

for photographic purposes
purum

assay

≥98.0% (HPLC)

autoignition temp.

989 °F

impurities

≤1% aminophenol

color

white to faint beige

mp

260 °C (dec.) (lit.)

solubility

H2O: 50 mg/mL, clear

SMILES string

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

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)

InChI key

ZVNPWFOVUDMGRP-UHFFFAOYSA-N

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Legal Information

ECOL is a trademark of Sigma-Aldrich Co. LLC

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Storage Class Code

13 - Non Combustible Solids

WGK Germany

WGK 3

Flash Point(F)

494.6 °F - closed cup

Flash Point(C)

257 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Ayman A Gouda et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 130, 480-487 (2014-05-13)
Simple, rapid and accurate high performance liquid chromatographic (HPLC) and spectrophotometric methods are described for determination of antihistaminic acrivastine in capsules. The first method (method A) is based on accurate, sensitive and stability indicating chromatographic separation method. Chromolith® Performance RP-18e...

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