ACID HYDROCLORIC - ACID HYDROCLORIC Acidum hydrochloricum...

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ACID HYDROCLORIC Acidum hydrochloricum HCl P.t.l: 36,46 Acid hydrocloric ph i ch a t 35,0 đ n 39,0% (kl/kl) HCl. ế Tính ch t Ch t l ng trong và không màu, b c khói. Hòa tr n b t kỳ t l nào v i n c. ỷ ệ ướ Có t tr ng t ng đ i kho ng 1,18. ươ Đ nh tính A. Pha loãng v i n c, dung d ch thu đ c có pH nh h n 4 (Ph l c 6.2). ướ ượ ơ ụ ụ B. Ph i cho ph n ng c a ion clorid (Ph l c 8.1). ụ ụ C. Đáp ng gi i h n trong m c đ nh l ng. ượ Đ trong và màu s c c a dung d ch Thêm 8 ml n c vào 2 ml ch ph m, dung d ch thu đ c ph i trong (Ph l c 9.2) và không ướ ế ượ ụ ụ màu (Ph l c 9.3, ph ng pháp 2). ụ ụ ươ Clor t do Không đ c quá 4 ph n tri u. ượ Thêm 100 ml n c không có carbon dioxyd (TT) ướ , 1 ml dung d ch kali iodid 10% (TT) và 0,5 ml dung d ch h tinh b t không có iodid m i pha (TT) vào 15 ml ch ph m. Đ
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