Meets ACS Specification
Ultraviolet Spectrophotometry
Maximum UV Absorbance
280 nm Max. 1.00 0.39
290 nm Max. 0.15 0.07
300 nm Max. 0.05 0.03
330 nm Max. 0.01 0.008
350 nm Max. 0.005 0.001
UV Cutoff nm Max. 280 280
Assay (by GC) % Min. 99.7 99.9
Color (APHA) Max. 10 4
Water % Max. 0.03 0.005
Residue after evaporation ppm Max. 10 2
Substances darkened by sulfuric acid To pass test pass
Thiophene (limit about 1ppm) To pass test pass
Sulfur Compounds (as S) % Max 0.005 0.001
