Molecular Formula | C6H10O7 |
Molar Mass | 194.14 |
Density | 1.757±0.06 g/cm3(Predicted) |
Melting Point | 171 °C |
Boling Point | 550.6±50.0 °C(Predicted) |
Water Solubility | 335.3g/L at 20℃ |
Vapor Presure | 0Pa at 25℃ |
pKa | 2.10±0.54(Predicted) |
CN200480037276.1
application date:
2004-12-10
Public/Announcement Number:
CN1894196A
Public/announcement date:
2007.01.10
applicant (patent):
Pasteur Stock Company
inventor:
T · duomschke M · merg ,F · Blackband P · Rasch ,T · Foster
National and provincial code:
DE
Abstract:
The present invention relates to a method by using anhydrous C
Abstract:
In this paper, the anaerobic degradation reaction of 2-keto-l-gulonic acid (KGA) was investigated. The KGA solution filled with N 2 ampoules was heated and degraded, and the water was removed by freeze drying, trimethylsilane (TMS) derivatives were prepared. The samples were analyzed by means of glass capillary column chromatography and temperature programming, and the structures of the degradation products were identified by Mass Spectrometry. The degradation pathway of KGA under these conditions was also discussed.
Key words:
KGA; Anaerobic degradation; Gas chromatography; mass spectrum
DOI:
CNKI:SUN:HXYO.0.1990-03-011
year:
1990
CN200380106798.8
application date:
2003-12-13
Public/Announcement Number:
CN1729199A
Public/announcement date:
2006.02.01
applicant (patent):
Pasteur Stock Company
inventor:
T · duomschke M · merg ,P · dector ,F · Shor
National and provincial code:
DE
Abstract:
The present invention relates to the use of an extractant comprising a tertiary amine and a polar organic diluent from a polar, preferably aqueous, solvent by means of liquid/liquid extraction, preference is given to a method of extracting 2-keto-l-gulonic acid from a solvent comprising a mixture of ascorbic acid and 2-keto-l-gulonic acid. Preferably, the method of the present invention further comprises the step of stripping 2-keto-l-gulonic acid and the step of returning the extractant. The invention also relates to a process for producing ascorbic acid from 2-keto-l-gulonic acid and isolating the ascorbic acid thus obtained.
LogP | -3.08 at 22℃ |