D-Alanine is white crystal or crystalline powder,aroma,sweet，soluble in water, slightly soluble in ethanol,insoluble in ether.
D-Alanine is an important organic chiral source, mainly used in the field of chiral additives and chiral auxiliaries, as a chiral source for chiral synthesis in the food industry.as an optically active organic acid,it plays an irreplaceable role in the asymmetric synthesis of some chiral compounds.it is also an important raw material for synthesis of vitamin B6,and a component of amino acid infusion.
D-Alanine can also be used as an additive in cosmetics,in the field of biochemical research,it often used in the preparation of tissue culture medium, liver function determination.
1.Pharmaceutical intermediates of cephalosporin ,and new-style sweeteners,and drug development
2.As Food additives
|
Item |
Specification |
Result |
|
Appearance |
White crystals or crystalline powder |
Conforms |
|
Identification |
Positive |
Conforms |
|
Loss on drying |
NMT 0.50% |
<0.20% |
|
pH |
5.5~6.7 |
6.0 |
|
Arsenic |
NMT 2ppm |
<1ppm |
|
Iron |
NMT 10ppm |
<8ppm |
|
Heavy metals (as Pb) |
NMT 10ppm |
<10ppm |
|
Specific rotation[α]D20 |
-14°~ -15° |
-14.5° |
|
Transmittance |
NLT 95.0% |
>95.0% |
|
Chloride |
NMT 0.010% |
<0.010% |
|
Residue on ignition |
NMT 0.20% |
<0.20% |
|
Assay (Titration) |
99.00~101.00% |
99.32% |
There are several Related Products available. Here are a few of the most common types:
D-Leucine : This product is an optically active organic acid,it plays an irreplaceable role in the asymmetric synthesis of some chiral compounds,etc.
D-Valine : This product is an important organic chiral source which mainly use in the fields of chiral intermediates,chiral additives and chiral auxiliaries,etc.
