CAS No.: | 131-57-7 |
---|---|
Formula: | C14h12o3 |
EINECS: | 205-031-5 |
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Item
|
Specification
|
Result
|
|
Appearance
|
Pale greenish yellow crystalline powder
|
Conform
|
|
Odor
|
Similar in character and intensity to standard, very slight odor
|
Conform
|
|
Identification
|
A. Infrared Absorption<197K>
B. The retention time corresponds to the standard. |
Conform
Conform |
|
Assay (HPLC)
|
97.0%~103.0%
|
99.4%
|
|
Congealing Temperature
|
≥62.0
|
62.1
|
|
Loss on Drying
|
≤0.20%
|
0.12%
|
|
Impurities (HPLC)
|
Total impurities:≤1.0%
Benzophenone-1:≤0.2% Single largest unspecified impurities:≤0.10% |
0.050%
0.03% Not detected |
|
Residual Solvents
|
Ethanol≤ 5000ppm
|
599ppm
|
|
Specific Extinction
|
E288 ≥630
|
636
|
|
(1%,1cm)
|
E325 ≥410
|
414
|
|
Melting Point
|
62.0~65.0
|
62.3~62.8
|
|
Gardner Color
|
≤4.0
|
2.9
|
|
Conclusion:
|
Meets the requirements of current USP monograph for Oxybenzone.
|
|