1、BRITISH STANDARD Extenders for paints - Specifications and methods of test - Part 5: Natural crystalline calcium carbonate The European Standard EN IS0 3262451998 has the status of a British Standard ICs 87.060.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGEI LAW BS EN IS0 3262-
2、5: 1998 BS EN IS0 3262-5:1998 direction of the Sector Board for Materiais and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 September 1998 hd. No. National foreword Date Text affected This British Standard is the English language version of EN IS0 32
3、62451998. It is identical with IS0 3262451998. Together with the other parts of BS EN IS0 3262, it WU supersede BS 17951976 which is declared obsolescent. The UK participation in its preparation was entrusted to Technical Committee SW1, Pigments, which has the responsibility to: - aid enquirers to u
4、nderstand the text; - present to the responsible internationaVEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed - monitor related international and European developments and promulgate them in the UK A list of organizations represente
5、d on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standars normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standard
6、s which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Stan - Part 1: /ntrouction and general test methods - Part 2: bytes (natural batium sulfate) - Part 3: Blanc fixe - Part 4: Whit
7、ing - Part 5; Natural crystalline calcium carbonate - Part 6: Pwitated calcium cartwnate -Part 7: Dolomite - Part 8: Natural clay - Part 9: Calcined clay Ducripton: paints, extenders. calcium carbonates, specifications, materials specifications, tests. ii STD.BS1 BS EN IS0 3262-5-ENGL 1338 m Lb21(bb
8、9 0720848 3T5 m EN IS0 3262-5:1998 - Part 10: Natural taldchlotite in lamellar form - Part 11: Natural talc, in lamellar form, containing carbonates - Part 12: Muscovite-type mica - Part 13: Natural quartz (ground) - fart 14: Cristobalite - Part 15: Vitreous silica - Part 16: Aluminium hydroxides -
9、Part 17: Precipitated calcium silicate - Part 18: Precipitated sodium aluminium silicate - Part 19: Precipitated silica - Part 20: Fumed silica - Part 21: Siljca sand (unground natural quae) - Part 22: Diatomaceous earth (kieselguhr) * * rJl iii STD-ES1 ES EN IS0 3262-5-ENGL 1998 Lh24bb9 0720849 231
10、 EN IS0 3262-5:1998 Extenders for paints - Specifications and methods of test - Part 5: Natural crystalline calcium carbonate 1 scope This part of IS0 3262 specifies requirements and corresponding methods of test for natural crystalline calcium carbonate. 2 Normative references The following standar
11、ds contain provisions which, through reference in this text, constitute provisions of this part of IS0 3262. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of IS0 3262 are encouraged to investigate th
12、e possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid Intemational - - _. is0 787-2:1981, General methods of test for pigments and extenders - Part 2: Determination of matter volatile at 705 “C. - * * IS0 787
13、-3:1979, General methods of test for pigments and extenders - Part 3: Detemination of matter soluble in rn water - Hot extraction method. IS0 787-7:1981, General methods of test for pigments and extenders - Part 7: Determination of residue on sieve - Water method - Manual procedure. IS0 787-8:1979,
14、General methods of test for pigments and extenders - Part 8: Determination of matter soluble in water - cold extraction method. IS0 787-9:1981, General methods of test for pigments and extenders - Part 9: Determination of pH value of an aqueous suspension. IS0 787-1 4:1973, General methods of test f
15、or pigments - Part 14: Determination of resistivity of aqueous extract. IS0 842:1984, Raw materials for paints and varnishes - Sampling. IS0 3262-1 :1997, Extenders for paints - Specifications and methods of test - Part 7: Introduction and general test methods. IS0 3696:1987, Water for analytical la
16、boratory use - Specification and test methods. 3 Definition For the purposes of this part of IS0 3262, the following definition applies: 3.1 natural crystalline calcium carbonate: A calcium carbonate derived from limestone and marble. The trigonal rhombic crystals tend to be rather larger than those
17、 of chalk. Limestone is a consolidated sedimentary rock whereas marble is a metamorphic caitionate rock. 1 STD.BS1 ES EN IS0 3262-5-ENGL 1998 1b2LtbbS 0720850 T53 W Characteristic Unit Requirement Grade A Grade B Grade C Grade D CaCO, content, min. % (dm) 99 98 95 90 Matter volatile at 105 OC, max.
18、YO (dm) 04 Loss on ignition, max. % (dm) 46” EN IS0 3262-5:1998 Test method IS0 3262-1 IS0 787-2 IS0 3262-1 4 Requirements and test methods For natural crystalline calcium carbonate complying with this part of IS0 3262, the essential requirements are specified pH value of aqueous suspension Matter i
19、nsoluble in hydrochloric acid, max. in table 1 andthe conditional requirements are listed in table 2. 8 to 10 IS0 787-9 % (rrvm) 1 2 8 See clause 6 Characteristic Residue on 45 prn sieve Particle size distribution (instrumentai method) Colour Lightness Resistivity of aqueous extract IS0 787-3 or IS0
20、 787-82 Unit Requirement Test method % (Wm) To be agreed between the IS0 787-7 % (Wm) interested parties To be agreed between the interested parties” IS0 3262-1 To be agreed between the interested parties interested parties2 To be agreed between the S.m IS0 787-14 1) These values do not take account
21、 of the effect on the result of any surface treatment. I 2) Method to be agreed between the interested parties. Table 2 - Conditional reauirements 5 Sampling Take a representative sample of the product to be tested, as described in IS0 842. 2 STDOBSI BS EN IS0 3262-5-ENGL 1998 Lb24669 0720851 99T EN
22、 IS0 3262-6:1998 6 Determination of matter insoluble in hydrochloric acid 6.1 Reagents During the analysis, use only reagents of recognized analytical grade and only water of at least grade 3 purity as defined in IS0 3696. 6.1.1 Hydrochloric acid, approximately 25 % (dm), p = 1,125 g/ml. 6.2 Apparat
23、us Use ordinary laboratory apparatus and glassware, together with the following: 6.2.1 Membrane filter, pore size 0,8 pm. 6.2.2 Air oven, capable of being maintained at (105 * 2) “C. 6.3 Procedure Weigh, to the nearest 0,l mg, approximately 10 g (mo) of the test sample into a 600 ml beaker. Add 50 m
24、l of water and, carefully, approximately 50 ml of hydrochloric acid (6.1.1). Cover the beaker with a watch glass and boil the solution for 15 min. Dry the membrane filter (6.2.1) in the air oven (6.2.2) at (105 * 2) “C to constant mass, cool in a desiccator to room temperature and weigh it to the ne
25、arest 0,l mg (m,). Then filter the solution through it. Wash the residue on the filter eight times with hot distilled water. Dry the residue on the filter in the air oven at (105 * 2) OC for about 1 h. Allow to cool in a desiccator to room temperature and weigh to the nearest 0,l mg (mJ. 6.4 Express
26、ion of results - - = - - - = * * Calculate the matter insoluble in hydrochloric acid w(MIHc,), expressed as a percentage by mass, using the equation ZR where mo is the mass, in grams, of the test portion; m, is the mass, in grams, of the dried membrane filter; m2 is the mass, in grams, of the dried
27、membrane filter plus the residue. 7 Testreport The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of IS0 3262 (IS0 3262-5); c) the results of the tests and whether or not the product complies with the
28、 relevant specification limits; d) any deviation from the test methods specified; e) the dates of the tests. 3 - - STD-ES1 ES EN IS0 3262-5-ENGL 1998 m 1624689 0720852 82b m EN IS0 3262-61998 Annex ZA (normative) Normative references to international publications with their relevant European publica
29、tions This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of the
30、se publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year ._ EN - Year IS0 787-2 1981 General methods of test for pigments and EN IS0 787-2 1995 extenders -
31、 Part 2: Determination of matter volatile at 105 degrees C IS0 787-3 1979 General methods of test for pigments and EN IS0 787-3 1995 extenders - Part 3: Determination of matter soluble in water - Hot extraction method IS0 787-8 1979 General methods of test for pigments and EN IS0 787-8 1995 extender
32、s - Part 8: Determination of matter soluble in water - Cold extraction IS0 787-9 1981 General methods of test for pigments and EN IS0 787-9 1995 extenders - Part 9: Determination of pH value of aqueous suspension IS0 3262-1 1997 Extenders for paints - Specifications and EN IS0 3262-1 1998 methods of
33、 test - Part 1 : Introduction and general test methods IS0 3696 1987 Water for analytical laboratory use EN IS0 3696 1995 - Specification and test methods STD-BSI BS EN IS0 3262-5-ENGL 1778 Lb24667 O720853 762 = BS EN IS0 3262-51998 BSI 389 Chiswi High Roa London w4 4AL BSI - British Standards Insti
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