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SRPS H.B8.636:1981

Sulphuric acid and oleums for industrial use — Determination of oxides of nitrogen — 2,4- Xylenol spectrophotometric method

Oct 28, 1981
Oct 28, 1981
95.99   Withdrawal of Standard   Jan 28, 2013

General information

95.99     Jan 28, 2013

ISS

H047

International Standard

71.060.30  

Serbian  

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Scope

The method ia applicable of oxide of nitrogen contents equal to or greater than 0,00002 % (m/m). The principle is based on oxidation of nitrous nitrogen to nitric nitrogen by potassium permanganate. Reaction of nitric nitrogen with 2,4-xylenol under specified conditions to form a nitrate derivate. Distillation of the nitrate derivate and absorption in sodium hydroxide solution. Spectrophotometric measurement of the yellow coloured nitrophenol at a wavelength of about 445 nm.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.636:1981
95.99 Withdrawal of Standard
Jan 28, 2013

Related project

Adopted from ISO 2363:1972