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1、INTERNATI INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MFXHAPODU OPAHMAIUUI no CTAHAPTMAU.ORGANISATION INTERNATIONALE DE NORMALSATON Sodium and potassium silicates for industrial use - SiQ2 SiO2 Calculation of the ratio Na O or K 2 2 O SiOp SiO, Silicates de sodium et de potassium B usage industr
2、iel - Calcul du rapport - ou - Na20 K,O First edition - 1976-02-01 FEE! 9 - 1976 JJJys”n Internat Doc $gx3 UDC 661.83.65 : 543 Ref. No. IS0 1689-1976 (E) : n 7 i) Descriptors : sodium silicates, potassium silicates, chemical analysis, determination of content, ratios, silicon dioxide, sodium oxide,
3、z potassium oxide ,* : Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:00:45 MDTNo reproduction or networking permitted without license from IHS -,-,- F
4、OREWORD IS0 (the International Organization for Standardization) is a worldwide federation of national standards institutes (IS0 Member Bodies). The work of developing International Standards is carried out through IS0 Technical Committees. Every Member Body interested in a subject for which a Techn
5、ical Committee has been set up has the right to be represented on that Committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for
6、 approval before their acceptance as International Standards by the IS0 Council. Prior to 1972, the results of the work of the Technical Committees were published as IS0 Recommendations; these documents are now in the process of being transformed into International Standards. As part of this process
7、, Technical Committee ISO/TC 47 has reviewed IS0 Recommendation R 1689 and found it technically suitable for transformation. International Standard IS0 1689 therefore replaces IS0 Recommendation R 1689-1970 to which it is technically identical. IS0 Recommendation R 1689 was approved by the Member Bo
8、dies of the following countries : Australia Austria Belgium Brazil Czechoslovakia Egypt, Arab Rep. of France Germany Greece Hungary India Iran Israel Italy Japan Netherlands New Zealand Peru Poland Portugal Romania South Africa, Rep. of Spain Switzerland Thailand Turkey U.S.S.R. Yugoslavia The Membe
9、r Body of the following country expressed disapproval of the Recommendation on technical grounds : United Kingdom The Member Body of the following country disapproved the transformation of ISO/R 1689 into an International Standard : United Kingdom 0 lnternationat Organisation for Standardization, 19
10、76 l Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:00:45 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STAND
11、ARD IS0 1689-1976 (E) Sodium and potassium silicates for industrial use - SiOa Calculation of the ratio Na 2 o SiO2 Or m 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies the formula for the . SiO, SiOz -for sodium silicates calculation of the ratro Na,O or K,O and potassium sil
12、icates for industrial use, respectively. In this ratio, only the Na,O or the K,O combined in the form of silicates is considered. 2 REFERENCES IS0 1690, Sodium and potassium silicates for industrial use - Determination of silica content - Gravimetric method by insolubiiization. IS0 1691, Sodium and
13、potassium silicates for industrial use- Determination of carbonate content - Gas-volumetric method. IS0 1692, Sodium and potassium silicates for industrial use - Determination of total alkalinity - Titrimetric method. 3 SODIUM SILICATES a = total alkalinity, expressed in Na20, % (m/m) (see IS0 1692)
14、 b = silica (SiOp), % (m/m) (see IS0 1690) c = sodium carbonate (Na2C0a), % (m/m) (see IS0 1691) d = Na,O combined in the carbonate form, % (m/m) = c x$= 0,585 c e = Na,O combined in the silicate form, % (m/m) = a -d =a-0,585c f=ratio by masso=$=a-o85c 2 . Si02 -=fxl,032 g = molar ratio Na20 4 POTAS
15、SIUM SILICATES a = total alkalinity, expressed in K20, % (m/m) (see IS0 1692) b = silica (SiO*), % (m/m) (see IS0 1690) c = potassium carbonate (K2C03), % (m/m) (see IS0 1691) d = K20 combined in the carbonate form, % (m/m) =cxz=O,682c r e = K20 combined in the silicate form, % (m/m) = a -d =a-0,682
16、c SiO, b b f = ratio by mass- =; = a _ o,682 c . Si02 g = molar rat10 K20 -=fxl,568 5 TEST REPORT The test report shall include the following particulars : a) the reference of the methods used for the determination and for the calculation; b) the results, and the method of expression used; c) any un
17、usual features noted during the determinations; d) any operations not included in this International Standard or the International Standards to which reference is made, or regarded as optional. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee
18、=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:00:45 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1689-1976 (I3 ANNEX IS0 PUBLICATIONS RELATING TO SODIUM AND POTASSIUM SILICATES FOR INDUSTRIAL USE IS0 1686 - Samples and methods of test - General
19、. IS0 1687 - Determination of density at 20 “C of samples in solution - Method using density hydrometer and method using pyknometer. IS0 1688 - Determination of dry matter - Gravimetric method. SiO, SiOa IS0 1689 - Calculation of the ratio or - 2 K,O . IS0 1690 - Determination of silica content - Gr
20、avimetric method by insolubilization. IS0 1691 - Determination of carbonate content - Gas-volumetric method. IS0 1692 - Determination of total alkalinity - Titrimetric method. IS0 2122 - Preparation of solution of products not easily soluble in boiling water and determination of matter insoluble in
21、water. IS0 2123 - Determination of dynamic viscosity. IS0 2124 - Determination of silica content - Titrimetric method. IS0 3200 - Determination of sulphate content - Barium sulphate gravimetric method. IS0 3201 - Determination of iron content - 1 ,I 0-Phenanthroline photometric method. 2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 22:00:45 MDTNo reproduction or networking permitted without license from IHS -,-,-