HG/T 4007-2008Photographic chemicals - Aluminium potassium sulfate dodecahydrate (aluminium potassium sulfate) (English PDF)

HG/T 4007-2008 is the English-translated version of 照相化学品十二水合硫酸铝钾(硫酸铝钾).

Aluminium potassium sulfate dodecahydrate for photographic use is the subject of HG/T 4007-2008, a recommended standard of the Chinese chemical industry. It lays down the requirements for the product, the test methods, the inspection rules and the provisions for packaging, labelling, transport and storage, and it covers the testing of the photographic-grade salt, also written simply as potassium aluminium sulfate. The standard was drawn up with reference to ISO 3620-1994, which it follows without being equivalent. The analyses use the standard preparations of GB/T 601 and GB/T 603, the sample and reagent provisions of GB/T 619, the laboratory water of GB/T 6682 and the photographic chemicals method GB/T 20432.5. Issued on 23 April 2008, it has applied since 1 October 2008.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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