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69749

Metol

Name: Metol
Brand: SIAL

ACS reagent, for spectrophotometric det. of inorganic phosphate, ≥99.0%

Synonym(s):

4-(Methylamino)phenol hemisulfate salt, Metol

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About This Item

Linear Formula:

C₇H₉NO · 1/2H₂SO₄

CAS Number:

55-55-0

Molecular Weight:

172.19

UNSPSC Code:

12164500

NACRES:

NA.21

PubChem Substance ID:

329761925

EC Number:

200-237-1

Beilstein/REAXYS Number:

3919382

MDL number:

MFCD00013140

Assay:

≥99.0% (NT), ≥99.0%

Form:

crystals

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Properties

grade

ACS reagent

Quality Level

100

assay

≥99.0% (NT), ≥99.0%

form

crystals

autoignition temp.

989 °F

quality

for spectrophotometric det. of inorganic phosphate

technique(s)

UV/Vis spectroscopy: suitable

ign. residue

≤0.1%

mp

260 °C (dec.) (lit.)

solubility

H₂O: 50 mg/mL, clear

application(s)

general analytical

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

Description

General description

Metol (4-methylaminophenol sulphate) is white crystalline which helps in determination of phosphate by reduction reaction of phosphomolybdic acid to molybdenum blue with intense colour. It is used as reducing agent. A solution of Metol could be prepared by dissolving a known amount in water with hydrated sodium sulphite along with which few drops of Brij needs to be added.

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pictograms

GHS08,GHS07,GHS09

signalword

Warning

hcodes

H302,H317,H373,H410

pcodes

P273 - P280 - P301 + P312 + P330 - P302 + P352 - P314

Hazard Classifications

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

Storage Class

13 - Non Combustible Solids

wgk

WGK 3

flash_point_f

494.6 °F - closed cup

flash_point_c

257 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Improved method for the automatic determination of serum inorganic phosphate.

D S Young

Journal of clinical pathology, 19(4), 397-399 (1966-07-01)

A single-solution method for the determination of soluble phosphate in sea water.

Murphy, James, and J. P. Riley.

J. Mar. Biol. Ass. U.K., 37, 9-14 (1958)

Development and validation of a rapid stability indicating HPLC-method using monolithic stationary phase and two spectrophotometric methods for determination of antihistaminic acrivastine in capsules.

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

Global Trade Item Number

SKU	GTIN
C6645-500MG	04061833511459
C6645-1G	04061826744178
C6645-25MG	04061833511442
C6645-5G	04061833511466
C6645-100MG	04061833511435
69749-50G	04061832787367
69749-250G	04061835570652
69749-1KG	04061832787336