HG/T 3-958-76
项目ltem 分析纯
(AR)
熔点范围Melting range,℃ 172.0~182.0(2)
pH变色范围Visnal transition interval 4.2(红)~6.2(黄)
乙醇溶解试验Solubility in ethanol 合格
灼烧残渣(以硫酸盐计)Ignition residue,% ≤0.2
被溴氧化试验Oxidized by bromine 合格
项目名称Item ACS Grade
熔点Melting point 179℃-182.0℃(I)
乙醇溶解试验Solubility in alcohol Passes test(I,II,III)
水溶液的澄清度试验Claroty of alcohol solution Passes test(I,II,III)
pH变色域Visnal transition interva 4.2(red)-6.2(yellow)(I,II,III)
note,I,free acid;II,the sodium salf,III,the hydrochloride.
Indicator
变色域visual transition interval 4.4 - 6.0 (corresponds)
熔点Melting point 179-182 °C
适用性suitability complies for sensitivity
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