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Xylose
| Product
Specifications |
| Xylose
JSFA VI |
| Test
Item |
Specifications |
| Description |
Colorless to white
crystals or a white crystalline powder. It is odorless
and has a sweet taste. |
| Identification |
|
| (1) |
A red precipitate is
formed. |
| (2) |
The solution is dextrorotatory. |
| (3) |
A yellow to light orange
color, develops. |
| (4) |
The melting point is
160°-163° |
| Purity |
|
| Clarity and Color of Solution |
Colorless, almost clear |
| Free Acid |
The color of the solution
is pink. |
| Sulfate |
Not more than 0.005
% |
| Heavy Metals |
Not more than 10 A
S/g |
| Arsenic |
Not more than 4, a
g/g |
| Other Saccharides |
Only one pink spot
is observed |
| Loss on Drying |
Not more 1-0 % |
| Residue on Drying |
Not more than 0.05
% |
| Assay |
98.0 - 101.0 % |
| D-Xylose |
| Item |
Standards |
Medical
Grade |
| D-Xylose Content |
>98.5 |
>99.5% |
| Sulphate |
<0.025% |
<0.025% |
| Heavy Metal Equivalent of Pb |
<5ppm |
<4ppm |
| Loss on Drying |
<1.0% |
<0.5% |
| AS |
<2ppm |
<2ppm |
| Ash Content |
<0.03% |
<0.03% |
| Optical Activity |
-- |
18.5° - 19.5° |
| Fe |
-- |
<5ppm |
| Na |
--
|
<25ppm |
| Chloride |
--
|
<50ppm |
| Item |
Results |
| Appearance |
Passed |
| Total Sugar Content |
100% |
| D-Xylose |
100% |
| Sulfate |
<0.025% |
| Heavy Metal (Equivalent
of Pb) |
<4ppm |
| Loss on Drying |
<0.20% |
| AS |
<2ppm |
| Ash Content |
<0.03% |
| Optical Activity |
19° |
| Fe |
<5ppm |
| NA |
<25ppm |
| Chloride |
<50ppm |
| L-Xylose
|
| CAS Number |
609-06-03 |
| Formula |
C5H10O5 |
| Formula Weight |
150,1 |
| Appearance |
White crystalline powder |
| Solubility in Water
|
Clear colorless solution |
| Analytical Data: |
| Paper Chromatography |
Homogeneous material |
| HPLC Assay |
Min. 99% |
| Specific Rotation |
[a] D20 -18,8°
+ 0,5 |
| Melting Point |
146-150° C |
| Ash (Sulfated) |
Max 0,05 |
| Heavy Metals (Pb) |
<5ppm |
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