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1、INTERNATIONAL STANDARD IS0 6745 First edition 1990-12-15 ANSI hItemit Doe SG Zinc phosphate pigments for paints - Specifications and methods of test Pigments de phosphate de zin c pour peintures - Sp is the volume, in millilitres, of sodium hydroxide solution (9.2.2.4) required to reach the first hy
2、drogen end-point in the blank test; is the volume, in millilitres, of sodium hydroxide solution (9.2.2.4) required to reach the second hydrogen end-point in the blank test; is the actual concentration, in moles of NaOH per litre, of the sodium hydroxide solution (9.2.2.4); is the mass, in grams, of
3、the test portion; 9,497 is the factor for the conversion of milli- litres of sodium hydroxide solution, c(NaOH) = 1,000 mol/l, to centigrams of PO,. If the two determinations differ by more than 0,2 % (m/m), repeat the procedure. Calculate the mean of two valid determinations and report the result t
4、o the nearest 0,l % (r?z/nz). 9.252 Precision No precision data are currently available 6 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 23:40:04 MDTNo reproduction or networkin
5、g permitted without license from IHS -,-,- IS0 6745:1990(E) 10 Test report The test report shall contain at least the following information: c) whether the phosphate content was determined by the gravimetric (9.1) or the titrimetric (9.2) method; a) all details necessary for the identification of th
6、e product tested; b) a reference to this International Standard (IS0 6745); d) the results of the tests and whether or not the product complies with the relevant specification limits; e) any deviation from the methods of test specified; f) the date(s) of the tests. 7 Copyright International Organiza
7、tion for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 23:40:04 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 6745:1990(E) UDC 667.622.2 Descriptors: paints, pigments, white pigments, z
8、inc phosphate, classification, specifications, tests. Price based on 7 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 23:40:04 MDTNo reproduction or networking permitted without license from IHS -,-,-