D-(-)-Pantolactone(599-04-2)

Spec:
Appearance:White to off-white powder
Assay:98%min.
Isomer impurity:0.1%max

Spec:

Appearance:White to off-white powder

Assay:98%min.

Isomer impurity:0.1%max

Specs:
AR Grade
Appearance:White crystalline solid
Assay:99.0%min
Ignition residue:0.03%max.
Cl:0.005%max.
SO4:0.01%max.
NO3:0.001%max.
PO4:0.001%max.
Fe:0.0005%max.
Heavy metals:0.0005%max.

Specs:
Appearance:white or off-white powder
Assay:98.5% to 100.5%
MP:131degC to 135degC
Acid value:4 to 5
Residue on ignition:0.1%max
Loss on drying:0.5%max
Sulphated ash:10ppm max

Specs:

USP32

Appearance:White crystalline powder

Assay:99%min


Lead time:5-8  days after P.O

Specs:
USP34 Grade 
Appearance:White gray or light yellow needle, longflake crystalls or crystal powder
Assay:98% to 102%
Specific rotation:+18.5deg to +21.5deg
Melting range:149degC to&n...

Specs:

Appearance:white crystalline powder

Assay:99%min

Specific rotation:+14 to +15 degree

Melting point:126degC to 134degC

Heavy metals:10ppmmax

Loss on drying:0.5%max

Bacteria amount:1000cfu/g max

Yeasts and molds:...

Specs:
Appearance:white crystal powder 
Assay:95%min 
Specific rotation:+9.5 to +12 deg C
Loss on drying:1.0%max

Specs:
Appearance:Light yellow liquid
Purity(GC):95%min.

Specs:

Appearance:yellow fine powder

Assay (HPLC):98%min

Odor:characteristic

Sieve analysis:90% pass 80 mesh min

Loss on drying:1%max

Residue on ignition:1%max

Heavy metal:15ppm max

As:2ppm max

Pb:1ppm max qq...

Specs:
USP Grade
Appearance:white to slightly yellow powder
Purity:97%-102.5%
Water:1.5%max

Specs:

Appearance:White or light yellow crystalline powder

Assay:99.0%min

Active iodine:55~58%

Loss on drying:0.5%max

MP:195 to 199 degc

Free acid:0.2%max