Compositions
Basic chromium sulfate.
Technical Data
No. | Type | Characteristic | |||||
Normal | Masking | Masking and self-basifying | |||||
HLS-C | HLS-A | HLS-D | HLS-F | HLS-M | HLS-B | ||
1 | Cr2O3, % | 25±1 | 24±1 | 23±1 | 21±1 | 24±1 | 20±1 |
2 | Basicity, % | 33±1 | 34±1 | 39±1 | 34±1 | 33±1 | —— |
3 | pH | 2.0-3.0 | 2.0-3.5 | 2.5-3.5 | 2.5-3.5 | 2.0-3.5 | 2.5-4.0 |
4 | Insoluble,%,≤ | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | —— |
5 | Cr6+,≤,ppm | 3.0 | |||||
Properties
1) Easily dissolves in water.
2) Penetrate quickly.
3) Absorb well.
4) Gives leather smooth and fine grain.
5) Gives leather full and soft body.
6) The color of blue leather is pale and uniform.
7) Safe and economic.
8) Reduce the chrome-content in waste.
Package and Storage
Paper bag with 25kgs;
Storing condition: cool and dry;
Shelf-life: 36months.
Safety
Avoid contact with skin and wear safety suit during operating.
Applications
As an excellent chrome tanning agent, it is suitable for all kinds of leather in tanning and re-tanning process.
Recommended amount is as follow:
Tanning: | 6-8%（% based on pelt weight） |
Re-tanning: | 3-4%（% based on shaved weight） |
