Ascorbic Acid | 50-81-7 : kuv
Khoom Description
Ascorbic Acid yog dawb los yog daj me ntsis crystals los yog hmoov, me ntsis acid.mp190 ℃ -192 ℃, yooj yim soluble nyob rau hauv dej, me ntsis soluble nyob rau hauv cawv thiab uneasily soluble nyob rau hauv ether thiab chloroform thiab lwm cov organic hnyav. Nyob rau hauv solid-state nws yog ruaj khov nyob rau hauv huab cua. Nws cov dej daws tau yooj yim hloov pauv thaum nws ntsib nrog huab cua.
Kev Siv: Hauv kev lag luam kws tshuaj, tuaj yeem siv los kho scurvy thiab ntau yam kab mob sib kis thiab mob ntev, muaj feem xyuam rau qhov tsis muaj VC.
Hauv kev lag luam khoom noj khoom haus, nws tuaj yeem siv tau los ua cov khoom noj khoom haus, ntxiv VC hauv kev ua zaub mov, thiab tseem yog Antioxidants zoo hauv kev khaws cov zaub mov, dav siv hauv cov khoom noj nqaij, fermented hmoov khoom, npias, tshuaj yej dej qab zib, kua txiv hmab txiv ntoo, txiv hmab txiv ntoo, kaus poom. nqaij thiab lwm yam; kuj feem ntau siv hauv cov tshuaj pleev ib ce, pub additives thiab lwm qhov chaw lag luam.
| Lub npe | Ascorbic acid |
| Qhov tshwm sim | Xim tsis muaj xim lossis dawb crystalline hmoov |
| Tshuaj Formula | C6H12O6 |
| Txuj | USP, FCC, BP, EP, JP, thiab lwm yam. |
| Qib | Khoom noj khoom haus, Pharma, Reagent, Electronic |
| Hom | Kinbo |
| Siv | Khoom noj khoom haus additive |
Muaj nuj nqi
Hauv kev lag luam khoom noj khoom haus, nws tuaj yeem siv tau raws li cov khoom noj khoom haus-al, ntxiv VC hauv kev ua zaub mov, thiab kuj yog Antioxidants zoo hauv kev txuag zaub mov, dav siv hauv cov khoom noj nqaij,, fermented hmoov khoom, npias, tshuaj yej dej qab zib, kua txiv hmab txiv ntoo, kaus poom. txiv hmab txiv ntoo, kaus poom nqaij thiab lwm yam; kuj feem ntau siv nyob rau hauv cov tshuaj pleev ib ce, pub additives thiab lwm yam industrial cheeb tsam.
Specification
| Yam khoom | STANDARD |
| Qhov tshwm sim | Dawb los yog yuav luag dawb crystalline hmoov los yog crystalline hmoov |
| Kev txheeb xyuas | Qhov zoo |
| Melting point | 191 ℃ ~ 192 ℃ |
| pH (5%, w / v) | 2.2 ~ 2.5 hli |
| pH (2%, w / v) | 2.4 ~ 2.8 hli |
| Kev sib hloov kho qhov muag tshwj xeeb | +20.5° ~ +21.5°° |
| Clarity ntawm kev daws | Ntshiab |
| Cov hlau hnyav | ≤ 0.0003% |
| Assay (raws li C 6H 8O6, %) | 99.0 ~ 100.5 hli |
| Tooj | ≤ 3 mg / kg |
| Hlau | ≤ 2 mg / kg |
| Mercury | ≤ 1 mg / kg |
| Arsenic | ≤ 2 mg / kg |
| Coj | ≤ 2 mg / kg |
| Oxalic acid | ≤ 0.2% |
| Poob rau ziab | ≤0.1% |
| Sulfated tshauv | ≤0.1% |
| Residual kuab tshuaj (raws li methanol) | ≤ 500 mg / kg |
| Tag nrho cov phaj suav (cfu / g) | ≤ 1000 |
| Poov xab & pwm (cfu / g) | ≤100 |
| Escherichia. Coli/g | Tsis muaj |
| Salmonella / 25g | Tsis muaj |
| Staphylococcus aureus / 25g | Tsis muaj |
