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Hisea Chem
QINGDAO LANGYI CHEM CO., LTD
13E,HUAPU BUILDING, NO.68,XIANGGANG MIDDLE ROAD,QINGDAO,CHINA
TEL:+86-0532-85708917 FAX:+86-0532-85708018
CERTIFICATE OF ANALYSIS
品名： Product name: | 二甲基甲酰胺 DIMETHYL FORMAMIDE | 批号 Batch Number | 2023.12.01 |
生产日期： Manu.date | 2023.12.01
| 执行标准 standaard | HG2028-91 |
测定项目Index | 质量指标 Specification | 测定结果 Result | |
色度 Chrominance /(Pt-Co) | ≤10 | 5 | |
蒸馏实验0°C 101325Pa 151-155°C，蒸馏体积 Distillation test 0°C 101325Pa 151-155°C distillate volume | ≥98.5 | 99.1 | |
二甲胺 Dimethylamine PPM | ≤15 | 3 | |
甲酸 Formic acid PPM | ≤25 | 3 | |
PH: 25°C 20% Aqueous solution | 7.0-7.5 | 7.2 | |
电导率Electroconductivity | ≤10 | 1.1 | |
水分 Moisture PPM | ≤500 | 126 | |
铁 Fe PPM | ≤0.05 | 0.02 | |
折射率Refractive index: nd25°C | 1.4270-1.4290 | 1.4282 | |
甲醛Methanal PPM | ≤20 | 2 | |
高沸点组分 Heavy component(Dimethyl acetamide) PPM | ≤500 | 133 | |
含量DMF % | ≥99.9 | 99.97 | |
结论Test Conclusion | |||
Qualified | |||
检验Analyst:sunxiaomei 复核Check: liuchun
检验日期Date:2023.12.01
