1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 8975 pH KS M ISO 8975 :2010 2010 8 27 http:/www.kats.go.krKS M ISO 8975:2010 : ( ) ( ) ( )SK ( ) ( ) : (http:/www.standard.go.kr) : :2005 11 30 :2010 8 27 2010-0342 : : ( 02-509-7300) (http:/www.kats.go.kr). 10 5 , . KS M ISO 8975:2010 pH PlasticsP
2、henolic resinsDetermination of pH 1989 1 ISO 8975, PlasticsPhenolic resinsDetermination of pH . 1 pH . A . 2 Pas . 2 pH . 3 , . : pH( 4), pH( 7), pH( 9), . 3.1 , c(KCOOC 6 H 4 COOH)0.05 mol/L, 23 pH4.00 2 100130 , 10.21 g 1 000 mL . . (thymol) . . . 3.2 KS M ISO 8975:2010 2 2 0.025 moL 0.025 moL , 2
3、3 pH6.88 2 110130 , 2 3.39 g 3.53 g 1 000 mL . . 3.3 4 (Borax) , c(Na 2 B 4 O 7 10 H 2 O)0.01 mol/L, 23 pH9.22 4 10(Na 2 B 4 O 7 10 H 2 O) 3.80 g , 1 000 mL . 4 4.1 pH 0.1 pH 4.2 4.2.1 4.2.2 (calomel) 4.2.3 . , . , . , (pH 45) . , 2 . 5 5.1 KS M ISO 8975:2010 3 (230.5) . 5.2 pH / . , (3.) . 5.2.1 (
4、). . , . pH pH . . 5.2.2 5.2.1 . ( .) . . , / pH . pH (0.1 pH ) , . , ( , , .) . 5.3 5.3.1 (23 0.5) . 50 %(m/m) . , (dropping funnel) . . 5.3.2 pH KS M ISO 8975:2010 4 , 5.2.1 5.2.2 (4.2) , . ( ) . pH , . . pH 0.2 pH , ( ). , , . , . pH , 2 , ( ). 6 5.3.2 0.1 pH . 7 . a) (KS M ISO 8975) b) c) (230.5
5、) 6. d) KS M ISO 8975:2010 5 A () pH A.1 pH . A.2 pH 7 , pH pH . A.3 3. . A.3.1 , c(HCl) 0.01 mol/L A.3.2 , c(NaOH) 0.01 mol/L A.3.3 . :(201) g :(401) g :(401) g , . A.4 4. A.4.1 A.4.2 1 g . A.5 KS M ISO 8975:2010 6 A.5.1 pH / , pH (3.) . A.5.2 250 mL (A.4.2) (A.3.3) (801) g . (A.4.1) (230.5) . pH ,
6、 (A.3.2) (A.3.1) pH (7.00.1) . A.5.3 A.5.3.1 A.5.2 80 g 250 mL (A.4.2) (201) g . (A.4.1) (230.5) . A.5.3.2 pH A.5.3.1 5.3.2 . A.6 6. A.7 7. pH 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS M ISO 8975 :2010 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Plastics Phenolic resins Determination of pH ICS 83.080.10 Korean Agency for Technology and Standards http:/www.kats.go.kr
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