Specification

Ⅰ

Ⅱ

Ⅲ

Ⅳ

Ⅴ

Na2S

60%Min.

60%Min.

60%Min.

60%Min.

60%Min.

Fe

0.001%Max

0.0015%Max.

0.002%Max.

0.003%Max.

0.005%Max.

Na2SO3

1.00%Max.

1.00%Max.

2.00%Max.

--

--

Na2S2SO3

2.00%Max.

2.00%Max.

2.00%Max.

--

--

Na2CO3

1.0%Max.

1.5%Max.

1.5%Max.

1.5%Max.

1.5%Max.

Water insolubles

0.05%Max.

0.05%Max.

0.05%Max.

0.05%Max.

0.05%Max.

Packing:

25kg net in ply-kraft paper bag with plastic woven bag coated outside and lined with pe bad and another pp woven bag inside

Properties:

YELLOW FLAKES, EASILY BEING OXIDIZED AND DELIQUESCENT IN AIR, DISSOLVING IN WATER SHOWING STRONG ALKALINITY; INSOLUBLE IN ETHER. IT IS CORROSIVE.

Application:

Mainly used for high-quality tanning ,textile, print,dyeing ,molting ,paper making, medicine industries etc.