Intermediate
3-hydroxynaphthalene-2,7-disulphonic acid
C.A.S No.：148-75-4
chemical structural formula： C10H8O7S2
molecular mass：304.2963
chemical name：2- hydroxy-naphthalene-3,6 --disulfonic acid disodium.png)
| appearance |
gray-white powder |
|
content |
above 80% |
|
Schaeffer's salt |
below 1.5% |
|
free acid (H2SO4) |
below 2% |
|
water insoluble |
below 0.1% |
|
packaging |
25kgwoven bag |