Nitrogen (N) ≥ Total Nitrogen (N) mass fraction: 20.5%

Sulfur (S) ≥ Total Sulfur (S) mass fraction: 24.0%

Free acid (H2SO4) ≤ 0.05%

Moisture (H2O) ≤ 0.5%

Water Insoluble Matter: ≤0.5%

Chloride ion (CI-) ≤ Chloridion: 1.0%

Execution Standard: GB/T 535-2020

Security Descriptioncription：S26；S37/39

Danger symbol: R36/37/38

Hazard Descriptioncription：Xi

CAS No.：7783-20-2

EINECS No.：231-948-1