CHARACTER | WHITE OR ALMOST WHITE CRYSTALLINE POWDER |
MELTING POINT | 152.0 ~ 156.0℃ |
SPECIFIC OPTICAL ROTATION | -16°~ -19° |
IDENTIFICATION | THE RETENTION TIME OF THE MAJOR PEAK IN THE CHROMATOGRAM OF THE ASSAY PREPARATION CORRESPONDS TO THAT IN THE CHROMATOGRAM OF THE STANDARD PREPARATION, AS OBTAINED IN THE ASSAY. |
UV ABSORPTION MAX. AT 266NM. | |
IR SPECTRA IS CONSISTENT WITH CRS. | |
CHECK | |
PH | 4.5 ~ 6.5 |
APPEARANCE OF SOLUTION | NOT MORE THAN STANDARD OF YELLOW 4 SIZE |
CHLORIDES | ≤0.02% |
FLUORIDES | ≥4.8% |
RELATED SUBSTANCES | INDIVIDUAL IMPORITY≤0.5% |
TOTAL IMPORITIES≤2.0% | |
WATER | ≤0.5% |
RESIDUE ON IGNITION | ≤0.1% |
HEAVY METALS | ≤20PPM |
ASSAY | CONTENT OF C12H14CL2FNO4S≥98.0% |