L (+)-Ascorbinsyre 99,0-100,5, AnalaR NORMAPUR® zA

Leverandør: VWR Chemicals
Ratings: Ingen bedømmelse

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

20150.184EA 465 DKK
20150.184 20150.231 20150.290
L (+)-Ascorbinsyre 99,0-100,5, AnalaR NORMAPUR® zA
L (+)-Ascorbinsyre
Formel: C₆H₈O₆
Molekylvægt: 176.13 g/mol
Kogepunkt: 553
Smeltepunkt: 190…192 °C
Massefylde: 1.694 g/cm³ (20 °C)
Opbevaringstemperatur: Stue temperatur
MDL Number: MFCD00064328
CAS-nummer: 50-81-7
EINECS: 200-066-2
Merck Index: 13,00837
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Specifikationer Testresultater

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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