Name: 2-Methyl-1,4-naphthoquinone

CAS:58-27-5   

Standard: GB7294-87

Menadione 

Appearance: White to brownish crystalline powder Solubility: Water soluble
Specifications:
MSB content: 98.5% (Menadione content: 51.5% )
MSB content: 97.5% (Menadione content: 51.0% )
MSB content: 96% (Menadione content: 50.0% )
MSB content: 60-75% (Menadione content: 35.0% )

 Item and Index:
 Item                                      Index
content（counting C11H8O2•NaHSO3•3H20）,%    ≥96.0
menadione,%                                 ≥50
Solution color                        ≤Kelly standard colorimetric solution No 4
sulphonic acid menadione               No deposition
Moisture,%                             ≤13.
Heavy metal（counting Pb）%            ≤0.002
arsenic salt（As）%                    ≤0.0005
Packing: 25Kgf netcarton, inner plastic bag
Shelf life: 12 months