| 柠檬酸 有一水柠檬酸与无水柠檬酸两种规格，主要用于食品、饮料行业作为酸味剂、调味剂及防腐剂、保鲜剂。还在化工行业、化妆行业及洗涤行业中用作抗氧化剂、增塑剂、洗涤剂等。 项目 | 单位 | BP 2009 | USP 32 | FCC 6 | E 330 | GB1987-2007 | 性状 | | 白色晶体粉末、无色晶体或颗粒 | 鉴别试验 | | 符合试验 | 溶液色泽&澄清度 | | 符合试验 | 符合试验 | / | 符合试验 | / | 含量 | % | 99.5-100.5 | 99.5-100.5 | 水分 | % | 7.5-9.0 | 7.5-9.0 | ≤8.8 | 7.5-8.8 | 7.5-9.0 | 透光率 | % | / | / | / | / | ≥95 | 钙盐 | ppm | / | / | / | ≤75 | ≤200 | 铁盐 | ppm | / | / | / | ≤5 | ≤5 | 砷 | ppm | / | / | / | ≤1 | ≤1 | 汞 | ppm | / | / | / | ≤1 | / | 重金属 | ppm | ≤10 | ≤10 | / | ≤5 | / | 草酸盐 | ppm | ≤360 | ≤360 | 符合试验 | ≤100 | ≤100 | 氯化物 | ppm | / | / | / | / | ≤50 | 硫酸盐 | ppm | ≤150 | ≤150 | / | ≤150 | ≤150 | 易碳化合物 | | 不深于标准 | 不深于标准 | 符合试验 | 符合试验 | ≤1.0 | 硫酸灰分 | % | ≤0.1 | ≤0.1 | ≤0.05 | ≤0.05 | ≤0.05 | 有机挥发杂质 | | / | / | 符合试验 | 三月桂胺 | mg/kg | / | / | ≤0.1 | | | 铅 | ppm | / | / | ≤0.5 | ≤0.5 | ≤0.5 | 铝 | ppm | ≤0.2 | ≤0.2 | / | / | / | 细菌内毒素 | IU/mg | <0.5 | 符合试验 | / | / | / | 水不溶物 | | / | / | / | / | 过滤时间不超过1min， 滤膜基本不变色， 目视可见杂色颗粒 不超过3个 |
Product characteristics and USES Citric acid With citric acid and anhydrous citric acid monohydrate two specifications, mainly used in food and beverage industry as sour agent, flavouring agent, preservative and antistaling agent. Also in the chemical industry, cosmetic industry and washing industry used as antioxidant, plasticizer and detergent, etc. Citric acid monohydrate quality standards
project | unit | BP 2009 | USP 32 | FCC 6 | E 330 | GB1987-2007 | character | | White crystal powder, colorless crystals or grains | Identification test | | Comply with the test | The solution color & clarity | | Comply with the test | Comply with the test | / | Comply with the test | / | content | % | 99.5-100.5 | 99.5-100.5 | moisture | % | 7.5-9.0 | 7.5-9.0 | ≤8.8 | 7.5-8.8 | 7.5-9.0 | Light transmittance | % | / | / | / | / | ≥95 | Calcium salt | ppm | / | / | / | ≤75 | ≤200 | Iron salts | ppm | / | / | / | ≤5 | ≤5 | arsenic | ppm | / | / | / | ≤1 | ≤1 | mercury | ppm | / | / | / | ≤1 | / | Heavy metal | ppm | ≤10 | ≤10 | / | ≤5 | / | Oxalic acid salt | ppm | ≤360 | ≤360 | Comply with the test | ≤100 | ≤100 | chloride | ppm | / | / | / | / | ≤50 | sulfate | ppm | ≤150 | ≤150 | / | ≤150 | ≤150 | Easy carbon compounds | | No deeper than the standard | No deeper than the standard | Comply with the test | Comply with the test | ≤1.0 | Sulphated ash | % | ≤0.1 | ≤0.1 | ≤0.05 | ≤0.05 | ≤0.05 | Organic volatile impurities | | / | / | Comply with the test | Three laurylamine | mg/kg | / | / | ≤0.1 | | | lead | ppm | / | / | ≤0.5 | ≤0.5 | ≤0.5 | aluminum | ppm | ≤0.2 | ≤0.2 | / | / | / | Bacterial endotoxin | IU/mg | <0.5 | Comply with the test | / | / | / | Water insolubles | | / | / | / | / | Filtering time is not more than 1 min, A membrane basic don\'t change color, Visual noise can be seen No more than three |
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