made by sugar reductant

Major components:
    Ikaline chromium sulphate:
    Technical index: Cr₂O₃ %: 24%
    Basicity%: low(331)%£»
    Insolubles%: ≤0.1%
    PH (1:10): 2.5-4.0

Applications:
Leather & fur tanning , particularly high-grade leathers.

Product Features:
Made by sugar reductant technology and high-speed centrifugal spray-drying processes. The product is of stable quality , high solubility & masking capability , giving even absorption with very low chromate residue. The leather surface is fine & smooth , with even luster and fine handle & resilience . Easy to use & measure, giving uniform leather quaity.

Packing & handling:
Packed in moisture-resistant paper bags Net weight 25kg per bag. The product is chemically nondangerous but should be stored in a well-ventilated dry dark place.

Recommended Quantities:
The low basicity agents are referable for primary tanning, at the rate of 5-7% of the weight of the leather. High-basicity agents are best for secondary processing at a rate of 3-5% leather weight.

Recommended use:
Based on bare leather weight:
Pickling fluid ratio: 1.0-0.8;+Salt: 5-8% rotate 5 minutes; +Sulphuric acid: (66°Be)0.9-1.0% rotate 3 hours; +Formic acid: 0.5% rotate 2 hrs; Hold in drum overnight until PH reaches 2.8-3.2.

Tanning:
Pour off part of the pickling fluid, tan in the remainder;
Fluid ratio: 0.5-0.8; +Cationic oil: 1.0-1.5% rotate for 30 minutes;+Chrome tanning agent: 5-7% rotate for 4 hours; +Add hot water to achieve fluid ratio of 2; Immerse hides until temperature reaches 35-42; Increasing PH, gradually to 3.8-4.0 with dilute sodium bicarbonate liquor, continue rotating 4 hours; Hold in drum overnight, rotate a further 30 minutes next morning before removing from the drum.