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L(+)-Kyselina askorbová 99.0-100.5%, AnalaR NORMAPUR® analytical reagent

Dodavatel: VWR Chemicals

Synonyms: Ascorbic Acid, L-Ascorbic acid, (R)-5-((S)-1,2-Dihydroxyethyl)-3,4-dihydroxyfuran-2(5H)-one, Acidum ascorbicum

20150.184EA 1488 CZK
20150.184 20150.231 20150.290
L(+)-Kyselina askorbová 99.0-100.5%, AnalaR NORMAPUR® analytical reagent
L(+)-Ascorbic acid
Vzorec: C₆H₈O₆
MW: 176,13 g/mol
Bod varu: 553 °C (1013 hPa)
Bod tání: 190…192 °C
Hustota: 1,694 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00064328
CAS číslo: 50-81-7
EINECS: 200-066-2
Merck Index: 13,00837
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Výsledky specifikačního testu

Assay 99.0 - 100.5 %
Colour of solution (50 g/l; water) BY7
Melting point 182 - 192 °C
Specific optical rotation (10 %; water) 20.5 - 21.5 °
Spec. optical rotation (25°C;10 %;water) 20.5 - 21.5 °
Heavy metals (as Pb) Max. 10 ppm
Ignition residue (SO4) Max. 0.05 %
Loss on drying (105°C) Max. 0.1 %
Cl (Chloride) Max. 20 ppm
SO4 (Sulphate) Max. 20 ppm
Ca (Calcium) Max. 50 ppm
Cu (Copper) Max. 10 ppm
Fe (Iron) Max. 2 ppm
Pb (Lead) Max. 10 ppm

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