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Standard ČSN 651046 25.4.1991 preview

ČSN 651046 (651046)

Chemical analysis of aluminum oxide. Determination of titanium dioxide content



STANDARD published on 25.4.1991


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5.70 USD

The information about the standard:

Designation standards: ČSN 651046
Classification mark: 651046
Catalog number: 29942
Publication date standards: 25.4.1991
SKU: NS-132080
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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The category - similar standards:

OxidesMaterials for aluminium production

Annotation of standard text ČSN 651046 (651046):

Norma platí pro oxid hlinitý používaný především pro výrobu hliníku a určuje pro stanovení oxidu titaničitého při hmotnostním zlomku od 0,001 do 0,02 % metodou fotometrickou. V této normě jsou zapracovány údaje z ISO 900:1977. Při provádění rozboru musí být dodržena veškerá ustanovení podle ČSN 65 1041. Metoda je založena na rozkladu vzorku tavením, tvorbě komplexní sloučeniny titanu s diantipyrilmethanem v kyselém prostředí a změření absorbance při vlnové délce 400 nm. Rušivý vliv trojmocného železa a pětimocného vanadu se odstraní jejich redukcí kyselinou askorbovou v přítomnosti síranu měďnatého jako katalyzátoru. ČSN 65 1046 byla schválena 25.4.1991 a nabyla účinnosti od 1.1.1992. Nahradila ČSN 65 1046 z 31.5.1978

Similar standards:

ČSN 651044ČSN 651044

25.4.1991

ČSN 651045ČSN 651045

25.4.1991

ČSN 651047ČSN 651047

25.4.1991

ČSN 651048ČSN 651048

25.4.1991

ČSN 651049ČSN 651049

25.4.1991

ČSN 651052ČSN 651052

25.4.1991

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