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指標(biāo)名稱 | Name of index | GB30603-2014 | FCC-V | E282 | |
色澤和組織狀態(tài) | Appearance description |
無(wú)色針狀結(jié)晶性粉末(無(wú)水) 無(wú)色結(jié)晶性顆粒(三水) |
White crystalline odorless powder ,anhydrous
White crystalline odorless granular, trihydrate
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含量,% | Assay(C2H3NaO2,on dried basis)% | ≥ | 99.0-101 | 99.0-101 | ≥98.5 |
PH值(1%水溶液) | PH (1%aqueous solution) | 8.0-9.5 | |||
游離堿 | Alkalinity % | ≤ | Pass |
0.2 ,anhydrous 0.05 ,trihydrate |
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鉀實(shí)驗(yàn) | Potassium Compounds% | ≤ | Pass | Pass test | |
干燥失重 |
Loss on drying % |
≤ |
2.0,無(wú)水 36.0-42.0,三水 |
1.0 anhydrous 36.0-41.0 trihydrate |
2.0(Anhydrous 120℃,4hours) 36.0-42.0(Trihydrate ,120℃,4hours) |
甲酸及其他易氧化物實(shí)驗(yàn) |
Formic acid, formats and other oxidisable substances % |
≤ | 0.1 | ||
鉛% | Lead(Pb)% | ≤ | 0.0002 | 0.0002 | 0.0002 |
砷鹽(以As計(jì)),% | Arsenic (As)% | ≤ | 0.0003 | ||
汞% |
Mercury (Hg) % |
≤ | 0.0001 |