Sodium hexafluorosilicate for industrial use — Determination of phosphate content — Molybdovanadate spectrophotometric method

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

10-01-1978

Publisher

International Organization for Standardization

Applicable to products having contents, expressed as phosphorus pentoxide, of 0.005 % (m/m) to 0.05 % (m/m). The residue from the determination of the loss of mass according to ISO 5444 is used to prepare the test sample. Dissolution in dilute hydrochloric acid and nitric acid solutions. Formation of the yellow molybdovanadate and spectrophotometric measurement at a wavelength of about 420 nm. Calculation of the content from the measured absorbance.

Committee	ISO/TC 47
DocumentType	Standard
Pages	3
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
BS 5705-2:1979	Identical
NBN T 03 527 : 1983	Identical
NFT 20 531 : 84 FD	Identical

BS EN 12175:2013	Chemicals used for treatment of water intended for human consumption. He xafluorosilicic acid
12/30268245 DC : 0	BS EN 12175 - CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID
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ONORM EN 12175 : 2013	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID
UNI EN 12175 : 2013	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID
DIN EN 12175:2013-08	Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid
UNE-EN 12175:2013	Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid
PREN 12175 : DRAFT 2012	CHEMICALS USED FOR TREATMENT OF WATER INTENDED FOR HUMAN CONSUMPTION - HEXAFLUOROSILICIC ACID
EN 12175:2013	Chemicals used for treatment of water intended for human consumption - Hexafluorosilicic acid