| 无水柠檬酸 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 |
The English version Anhydrous 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 used as antioxidant, plasticizer and detergent in the washing industry, etc. Citric acid monohydrate quality standards project unit BP 2009 USP 32 The FCC 6 E 330 GB1987-2007 character White crystal powder, colorless crystal or granule Identification test Conform to the test Color & clarify degree of solution Conform to the test Conform to the test / Conform to the test / content % 99.5 to 100.5 99.5 to 100.5 moisture % 7.5 to 9.0 7.5 to 9.0 8.8 or less 7.5 to 8.8 7.5 to 9.0 Light transmittance % / / / / 95 or more Calcium salt Parts per million (PPM) / / / 75 or less 200 or less Iron salts Parts per million (PPM) / / / 5 or less 5 or less arsenic Parts per million (PPM) / / / 1 or less 1 or less mercury Parts per million (PPM) / / / 1 or less / The heavy metal Parts per million (PPM) 10 or less 10 or less / 5 or less / Oxalic acid salt Parts per million (PPM) 360 or less 360 or less Conform to the test 100 or less 100 or less chloride Parts per million (PPM) / / / / 50 or less sulfate Parts per million (PPM) 150 or less 150 or less / 150 or less 150 or less Easy carbon compounds Not deeper than the standard Not deeper than the standard Conform to the test Conform to the test 1.0 or less Sulphated ash % 0.1 or less 0.1 or less 0.05 or less 0.05 or less 0.05 or less Organic volatile impurities / / Conform to the test Three laurylamine Mg/kg / / 0.1 or less Lead (pb) Parts per million (PPM) / / 0.5 or less 0.5 or less 0.5 or less aluminum Parts per million (PPM) 0.2 or less 0.2 or less / / / Bacterial endotoxin IU/mg < 0.5 Conform to the test / / / Water insolubles / / / / Filtering time is less than 1 min, Membrane filter basic don't change color, Visual noise can be seen No more than three | 
