Appearance：White crystal
Assay：≥99.9%
Moisture：≤ 0.05%
Ash：≤ 0.002%
Melting point：≥69°C
Heavy metal：≤ 5ppm
Sulfate：≤ 0.002%
Free phenol：≤ 0.02%

Appearance：White powder
Assay：≥98%
Volatiles：≤ 0.1%
Ash：≤ 0.05%
Melting point：160-164°C
Cl：≤ 0.2%
Fe：≤ 10ppm

Appearance：White powder
AN 168Assay：61.7-71.7%
AN 1010Assay：30.3-36.3%
Volatiles：≤ 0.5%
Transmittance：
425nm: ≥93%
500nm: ≥95%

Appearance：White powder
AN 168Assay：45.5-55.5%
AN 1010Assay：45.5-55.5%
Volatiles：≤ 0.5%
Ash：≤ 0.1%
Transmittance：
425nm: ≥96%
500nm: ≥98%

Appearance：White powder
Volatiles：≤ 0.5%
Ash：≤ 0.1%
Transmittance：
425nm: ≥95%
500nm: ≥97%

Appearance：White powder
Volatiles：≤ 0.5%
Cl：≤ 0.3%
Melting point：≥260°C
Ca：5.5-5.9%
Transmittance：
425nm: ≥85%
500nm: ≥90%

Appearance：White powder
Assay：≥99%
Volatiles：≤ 0.5%
Ash：≤ 0.1%
Melting point：50-53°C
Transmittance：
425nm: ≥98%
500nm: ≥99%

Appearance：Off-White powder
Volatiles：≤ 0.5%
Ash：≤ 0.1%
Melting point：85-95°

Appearance: Off-white powder
Assay：≥98%
Volatiles：≤ 1.9%
Cl：≤ 1%
Melting point：270-274°C
Transmittance：
425nm: ≥90%
500nm: ≥92%