For the preparation of formate, formic acid ester, formamide and so on, or also used in medicine, printing and dyeing. dye, leat

Item	Index
	Top grade	First grade	Qualified product
Chroma(Pt-Co)≤	10	20
Assay%≥	90.0	85.0	85.0
Dilution test(Acid+water=1+3)%≤	no cloudy	Qualified
Chloride(as C1)%≤	0.003	0.005	0.020
Sulfate (as S04)%≤	0.001	0.002	0.050
Iron (as Fe)%≤	0.0001	0.0005	0.0010
Residue on evaporation %≤	0.006	0.020	0.080

85% Formic acid