GB1886.306-2020表2理化指标项目指标检验方法谷氨酸钠含量(以干基计)w/%99.0GB5009.43透光率,w/%98附录A中A.3比旋光度(以干基计)a/()m2kg-+24.9+25.3附录A中A.4氯化物(以Cl计),w/%50.1附录A中A.5pH(10%)6.77.5附录A中A.6干燥减量,w/%0.5附录A中A.7铁(Fe)/(mg/kg)5附录A中A.8硫酸盐(以SO4计),w/%0.05附录A中A.9铅(Pb)/(mg/kg)1.0GB5009.75或GB5009.12砷(As)/(mg/kg)2.0GB5009.76或GB5009.112