1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 20843 HFAE, HFAS HFC pH KS M ISO 20843： 2012 2012 10 12 http:/www.kats.go.krKS M ISO 20843:2012 : ( ) ( ) GS () SK ( ) : (http:/www.standard.go.kr) ： ：2005 1 25 ：2012 10 12 2012-0520 ： ： ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M ISO 20843
2、2012 i 2011 2 ISO 20843, Petroleum and related products Determination of pH of fire-resistant fluids within categories HFAE, HFAS and HFC . KS M ISO 20843:2012 HFAE, HFAS HFC pH Petroleum and related products Determination of pH of fire-resistant fluids within categories HFAE, HFAS and HFC , . 1 KS
3、 M ISO 6743 4 HFAE, HFAS HFC pH . 2 . . ( ) . KS M 2001, KS M ISO 3696, 3 pH 2 pH . (calomel) . (Grouped electrode) . pH 20 . pH 48 . 4 4.1 , KS M ISO 3696 2 . 4.2 pH 4.2.1 , 20 pH 7.00 KS M ISO 20843:2012 2 KH2PO4(Potassium dihydrogen orthophosphate) 3.800 g Na2HPO4(Disodium hydrogen phosphate) 3.4
4、15 g (4.1) 20 1 000 mL . KH2PO4 110 120 2 . 4.2.2 , 20 pH 9.22 Na2B4O710H2O(Disodium tetraborate decahydrogen) 3.80 g (4.1) 20 1 000 mL . 4.2.3 , 20 pH 11.72 Na2HPO4(Disodium hydrogen phosphate) 1.42 g Carbonate-free NaOH(Sodium hydroxide) 0.1 mol/L 100 mL 20 (4.1) 1 000 mL . 4.2.1 4.2.3 . ( ) 3 . 4
5、3 4.3.1 (C7H8), 4.3.2 -2- (C3H8O), 5 5.1 pH 5.2 5.3 , 0 100 1 . 5.4 , 0.1 mg . 6 KS M 2001 . 7 7.1 pH 4.2 20 pH (5.1) . pH pH . 7.2 pH pH pH 48KS M ISO 20843:2012 3 . (201) . (4.1) , 1 pH (5.1) pH . , . . (4.3.1) - 2- (4.3.2) . 8 pH 0.1 . 9 9.1 . 9.2 , r , 20 1 . HFAE, HFAS HFC , r 0.2 9.3 , R , 20
6、 1 . HFAE HFAS ： R 0.6 HFC ： R 0.3 10 . a) (KS M ISO 20843) b) HFAE HFAS , % c) (8. ) d) e) KS M ISO 20843:2012 4 1 KS M ISO 6743 4, , ( L) 4： H ( ) HFAE, HFAS HFC pH 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M ISO 20843:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Petroleum and related products Determination of pH of fire-resistant fluids within categories HFAE, HFASand HFC ICS 75.120
