Overview.

Basic chrome sulphate is one of the most important chemical used in tanning of leather. More than 90% of the world’s leather is tanned using chrome sulphate and it has long been regarded as the most effective and efficient tanning agent.

It is manufactured by the simple reduction of hexavalent chromium to it’s trivalent stage using sulphur dioxide.

Due to the anionic nature of powder chrome sulphate, it does not interfere with the negatively charged group collagen while penetrating in to the pelt. The anionic character gradually transforms to cationic nature which enables the chromium complexes to fix with the carboxyl groups of collagen during transformation. The chrome fixation is finally completed and accelerated by basification.

Due to the chromium penetration, hides once tanned with chrome leave a pale blue color which is popularly called “Wet Blue”

Our SOLACHROME® B is the standard grade for tanning, with 26% chrome content and 33% basicity.

For customers who require chrome with higher basicity, we can supply SOLACHROME® HB 42 and SOLACHROME® HB 50 with basicity 42% and 50% respectively.

Our special product SOLACHROME® SB which is self-basifying basic chrome sulphate already has a basifying agent hence there is no need for basification after chrome penetration. This makes tanning relatively easy as it eliminates the basification process.

Chrome Syntan
SOLTAN® H is a retanning agent consisting basic chrome sulphate and some synthetic syntans.

SOLACHROME A.

Organically reduced Basic Chrome Sulphate

SOLACHROME® A is powdered basic chrome sulphate, readily soluble in cold water. It is suitable for tanning all kinds of leather. Due to its strong sulphate masking, SOLACHROME A is of anionic character which helps in rapid penetration of chrome.

Appearance Dark green fine powder
Stability in Air Hygroscopic in moist air
Solubility Soluble in water
Cr2O3 Content (approx) 24%
Basicity (approx) 33%
pH 2.9 – 3.1

Application
SOLACHROME® A Use 5.5 – 7% on pelt weight for standard chrome tanning. It is advisable to start basification about 30-60 minutes after addition of SOLACHROME® A.

Packaging
25kg inner layer polypropylene, outer layer woven HDPE bags

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.

SOLACHROME B.

Inorganically reduced Basic Chrome Sulphate

SOLACHROME® B is powdered basic chrome sulphate, readily soluble in cold water. It is suitable for tanning all kinds of leather. Due to its strong sulphate masking, SOLACHROME® B is of anionic character which helps in rapid penetration of chrome.

Appearance Dark green fine powder
Stability in Air Hygroscopic in moist air
Solubility Soluble in water
Cr2O3 Content (approx) 25.5%
Basicity (approx) 33%
pH 3

Application
SOLACHROME® B is generally added to pickle float and should be used in powder form. Use 5 – 6.5% on pelt weight for standard chrome tanning. It is advisable to start basification about 30-60 minutes after addition of SOLACHROME® B.

Packaging
25kg multiply paper bags, palletized cargo

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.

SOLACHROME HB-42.

Basic Chrome Sulphate with high basicity

SOLACHROME HB-42 is powdered basic chrome sulphate with readily soluble in cold water. Due to its organic masking, SOLACHROME HB-42 provides resistance to pH fluctuations during basification.

Appearance Fine green powder
Stability in Air Hygroscopic in moist air
Solubility Soluble in water
Cr2O3 Content (approx) 24%
Basicity (approx) 42%
pH 3.0-3.2

Application

SOLACHROME® HB-42 can be used for main tanning and re-tanning processes.

SOLACHROME® HB-42 should be used 5.5 – 7% on pelt weight in main tanning and 2-6% on pelt weight for re-tanning process.

Packaging

  • 25kg multiply paper bags, palletized cargo
  • 25kg inner layer polypropylene, outer layer woven HDPE bags

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.

SOLACHROME HB-50.

Basic Chrome Sulphate with high basicity

SOLACHROME HB-50 is powdered basic chrome sulphate with 50% basicity. Due to its organic masking, SOLACHROME HB-50 provides maximum penetration without the risk of chrome stains and precipitation.

Appearance Fine green powder
Stability in Air Hygroscopic in moist air
Solubility Soluble in water
Cr2O3 Content (approx) 24%
Basicity (approx) 50%
pH 3.2-3.4

Application

SOLACHROME® HB-50 is added directly in powder form.

SOLACHROME® HB-50 is a very effective retanning agent, owing to its buffering effect it does not change the pH of the bath during retanning. Hence basification is not required.

Packaging

  • 25kg multiply paper bags, palletized cargo
  • 25kg inner layer polypropylene, outer layer woven HDPE bags

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.

SOLACHROME SB.

Self-basifying Basic Chrome Sulphate

SOLACHROME SB is powdered self-basifying basic chrome sulphate. There is no need for addition of basifying agent in the chrome tanning process.

As SOLACHROME SB already has a basification agent, it eliminates the requirement of the basification process making chrome tanning simpler. It leaves leather fuller with uniform quality.

Due to the elimination of the basifying process SOLACHROME SB helps save time and labour.

Appearance Green powder
Stability in Air Hygroscopic in moist air
Solubility Soluble in water
Cr2O3 Content (approx) 21%

Application

SOLACHROME® SB is added to pickle float and should be used in powder form. It is advised to use 6.5-8% on pelt weight.

Packaging

  • 25kg multiply paper bags, palletized cargo
  • 25kg inner layer polypropylene, outer layer woven HDPE bags

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.

SOLTAN-H.

Chrome Syntan

SOLTAN H is a retanning agent consisting of basic chrome sulphate and other synthetic syntans.

Treatment with SOLTAN H corrects the deficiencies of wet blue after main chrome tanning.

SOLTAN H minimizes the quality variations of wet blue in different batch processes, improves the surface feel, grain tightness, handle, fullness and helps to achieve full dye shade in retanning.

Appearance Fine green powder
Stability in Air Hygroscopic in moist air
Cr2O3 Content 13%

Application

SOLTAN® H can be used in retanning process of all kinds of wet blue.

SOLTAN® H raises the pH of float in small portions. In main tanning results, if the chrome oxide content is found to be insufficient in wet blue, SOLTAN® H can be used with SOLACHROME® HB-42 or SOLACHROME® HB-50. 

Packaging

  • 25kg multiply paper bags, palletized cargo
  • 25kg inner layer polypropylene, outer layer woven HDPE bags

Storage
Store in a cool dry place. Keep away from heat sources.

Safety Precautions
Avoid contact with eyes, skin and breathing of dust.

All data are indicative and based on average results of our analysis.