| 摘要 |
The antifreeze contains 1,2-glycols and 1.50-5.00 alkali (pref. Na) benzoate, 1.00-2.50 Na tetraborate 10 H2O, 0.10-0.50 alkali (pref. Na) nitrite, 0.02-0.10 benzotriazole or mercaptobenzothiazole or mixture of them, 0.02-0.15 Na metasilicate, and 0.10-1.00 of a water-soluble tertiary amine R'n - N - (CHR-CH2-OH)3-n where n = 0, 1 or 2; R = H or Me; R' = Me, Et, Pr, isopropyl or Bu. |
