0 Stavka
Moj nalog
Telefon: (011) 7541-421, 3409-301, 3409-335, 6547-293, 3409-310
E-mail: Prodaja standarda: prodaja@iss.rs Seminari, obuke: iss-edukacija@iss.rs Informacije o standardima: infocentar@iss.rs
Stevana Brakusa 2, 11030 Beograd
Glavni meni

ISO 2829:1973

Aluminium oxide primarily used for the production of aluminium — Determination of phosphorus content — Reduced phosphomolybdate spectrophotometric method
1. 12. 1973.

Опште информације

90.93     4. 1. 2022.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

Applicable to products having phosphorus contents of more than 0.0005 % (m/m). Preparation of a solution from a test portion by alkaline fusion either with a mixture of sodium carbonate and borid or of sodium carbonate and sodium tetraborate. Dissolution of the cooled molten mass in nitric acid and adjustment of an appropriate aliquot portion to pH 2. Formation of a phosphomolybdic complex and extraction by 2-methylpropan-1-ol in a sulphuric acid medium. Reduction of the complex by thin(II) chloride in the organic phase and spectrophotometric measurement of the reduced complex at a wavelength of about 730 nm. Has also been approved by the IUPAC.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 2829:1973
90.93 Odluka o potvrđivanju standarda
4. 1. 2022.

Nacionalna preuzimanja

SRPS H.B8.611:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja fosfora - Spektrofotometrijska metoda

95.99   Povučen

H047 Saznaj više