浅黄色细松粉末。微有蛋白胨气味。极易吸湿。易溶于水，不溶于乙醚和甲醇。
本品系由酪蛋白经酸水解而成，含有大量氨基酸，适用于敏感培养基的配制及耐盐菌的生长。
Casein hydrolysate(acid) is prepared by the reaction of casein with hydrochloric acid,it contains high availability of amino acids,often used in sensitiveity media and applications where salt tolerant organisms are used.
有效期：三年；Period of validity:three years.

总氮Total nitrogen                     ≥8.3%
氨基氮Amino nitrogen                   ≥3.5%
氯化物Cl                               ≤28%
水分Moisture                           ≤6%
灰分Ash                                ≤27%