KS M ISO 787-4-2007 General methods of test for pigments and extenders-Part 4:Determination of acidity or alkalinity of the aqueous extract《颜料和填充剂的常用试验方法 第4部分 水萃取酸度或碱度的测定》.pdf

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1、 KS M ISO 7874 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 4: KS M ISO 7874 : 2007 (2012 ) 2007 10 31 http:/www.kats.go.krKS M ISO 7874:2007 : ( ) ( ) LH () () KCC ( ) : (http:/www.standard.go.kr) : :2002 1 14 :2007 10 31 :2012 12 20 : 20120740 : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M IS

2、O 7874 : 2007 (2012 ) 4: Ge Part 4 :Determination of acidity or alkalinity of the aqueous extract neral methods of test for pigments and extenders 1981 1 ISO 7874, General methods of test for pigments and extenders Part 4:Determination of acidity or alkalinity of the aqueous extract , . 1 KS M ISO 7

3、87 . . , . (special method) . 2 . . ( ) . KS L ISO 385( ), KS M ISO 7873, 3: KS M ISO 7878, 8: KS M ISO 15528, , 3 , . KS M ISO 7874:2007 3.1 (hydrochloric acid) , c(HCl)0.05 mol/L 3.2 (sodium hydroxide) , c(NaOH)0.05 mol/L (potassium hydroxide) , c(KOH)0.05 mol/L A 3.3 (methyl red indicator) 60 %(V

4、/V) 1 g/L 4 4.1 50 mL, KS L ISO 385 . B 4.2 pH 0.1 . pH . 5 KS M ISO 15528 . 6 . 6.1 KS M ISO 7873 . KS M ISO 7878 . 5 . 6.2 (6.2.1) . (6.2.2) . 6.2.1 ( A) 100 mL (6.1) (3.3) 5 . 2 KS M ISO 7874:2007 3 (orange) . (yellow)(), (3.1) . (red)() (3.2) . . 6.2.2 ( B) 100 mL (6.1) , pH pH . pH 4 8 . pH 8 (

5、) (3.1) pH 8 . pH 4 () (3.2) pH 4 . 6.2.3 5 % (6.) . 7 7.1 ( ) . m V m V A 125 2 100 5 . 2 A :() , 100 g 0.1 mol/L () . m : (6.1) (g) V : (3.2) (3.1) (mL) 7.2 . 8 . a) b) c) 7. d) e) 4: 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS M ISO 7874 :2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS General methods of test for pigments and extenders Part 4 :Determination of acidity or alkalinity of the aqueous extract ICS 87.060.10 Korean Agency for Technology and Standards http:/www.kats.go.kr

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