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69749 Sigma-Aldrich

Metol

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

Synonym: 4-(Methylamino)phenol hemisulfate salt, Metol

  • CAS Number 55-55-0

  • Linear Formula C7H9NO · 1/2H2SO4

  • Molecular Weight 172.19

  •  Beilstein Registry Number 3919382

  •  EC Number 200-237-1

  •  MDL number MFCD00013140

  •  PubChem Substance ID 329761925

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Building Blocks, C6 to C8, Chemical Synthesis,
grade   ACS reagent
InChI Key   ZVNPWFOVUDMGRP-UHFFFAOYSA-N
assay   ≥99.0% (NT)
  ≥99.0%
autoignition temp.   989 °F
quality   for spectrophotometric det. of inorganic phosphate
ign. residue   ≤0.1%
mp   260 °C (dec.)(lit.)
solubility   H2O: soluble50 mg/mL, clear

Description

Other Notes

Same product — same quality — now Sigma-Aldrich brand

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.

Legal Information

ECOL is a trademark of Sigma-Aldrich Co. LLC

Price and Availability

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Safety & Documentation

Safety Information

Symbol 
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
UN 3077 9 / PGIII
WGK Germany 
3
Protocols & Articles
Peer-Reviewed Papers
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69888 Molybdate reagent solution, for photometric phosphate determination acc. to DIN 38405-D11-1
61827 2,6-Bis{[bis(2-pyridylmethyl)amino]methyl}-4-methylphenol, for spectrophotometric determination of phosphate, ≥97.0% (HPLC)

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