BCS Basic Chrome Sulphate for Leather Tanning Industrial Grade Copper Sulphate Dark Green Powder 25kg Package China Supplier Price

Overview & Basic Info

EINECS 235-595-8

Certification CCIC, CIQ, RoHS, ISO

Purity ≥99%

Type Basic Chromic Sulfate

Appearance Powder

Grade Standard Industrial Grade

Molecular Mass 165.07 G/Mol

Density 1.57 G/Cm³

Melting Point > 900 °C

Boiling Point 102 °C

Assay(Cr2O3) % 25%~26%

Transport Package 20 Kgs/Bag(S)

Specification 99%

Origin China

HS Code 2915299090

Production Capacity 300,000 Mt/Year

Product Description

BCS Basic Chrome Sulphate China for Leather Tanning

Basic Chromic Sulfate

Basic Chromic Sulfate, primarily in the form of chromium(III) sulfate basic salts, is an essential inorganic chemical compound. It is the principal source of trivalent chromium used in industrial processes. The compound typically appears as a dark green to violet powder or solution and is valued for its role as a highly effective cross-linking agent, particularly renowned as the world's primary chrome tanning agent for leather manufacturing.

Product Specification

Item	Value
Classification	Sulphate
Type	Chromium sulphate
CAS No.	12336-95-7
Other Names	Basic Chromium Sulphate
MF	Cr.(OH)m.(SO4)n.X(H2O)
EINECS No.	235-595-8
Place of Origin	China, Hubei
Grade Standard	Industrial Grade, leather tanning
Purity	25% (Cr2O3%)
Appearance	Dark green powder
Application	Leather and fur tanning
Model Number	Inorganic type 25%
Assay(Cr2O3) %	25% - 26%
Basicity	33 +/- 2 %
HS Code	32029000
Production Technology	Organic reduction
Cr6+	Not detected
10% Solution pH Value	2.0 - 3.0
Chrome Absorption	High penetration and absorption
Expiration Date	2 Years

Key Applications

Leather Tanning Industry

Transforms raw hides into stable, durable leather. Trivalent chromium ions bond with collagen fibers, providing heat/water resistance, flexibility, and excellent dye absorption.

Ceramic Glazes & Pigments

Serves as a reliable source of chromium to produce stable green colors in glazes and ceramic bodies, yielding shades from bright green to pink or black depending on formulations.

Wood Preservation & Catalysts

Functions as a key protective component in wood preservatives against rot and insects. Also acts as a catalyst precursor in organic synthesis and chromium compound production.

Textile Mordant & Others

Historically applied as a mordant in dyeing textiles to maximize color fastness. Additionally utilized in green chromium plating processes and as an additive in drilling muds.

Packing & Delivery

Packing Details

Sample Packing: Foil bags

Bulk Packing: 25 kgs bags or jumbo (ton) bags

Delivery Details

Sample Shipping: Shipped within 1~3 days after sample order confirmation via FedEx, UPS, DHL or EMS.

Bulk Shipping: Shipped within 7~10 days after bulk order confirmation via sea freight or air freight. Cooperation with customer-preferred freight forwarders is fully supported.

Frequently Asked Questions

Q1: What are your standard packing terms?

Standard packing is 25 kgs bags or jumbo (ton) bags. Custom packing is available upon request if you have specific packaging needs or legally registered patents (subject to relevant document confirmation).

Q2: What payment methods do you accept?

We accept T/T, Western Union, Bitcoin, and Tether (USDT). Please confirm your preferred payment method with our sales team before placing your official order.

Q3: What shipping methods are available?

For small packages (samples or small-quantity orders), we ship via international couriers like DHL, UPS, FedEx, or EMS. Bulk shipments are arranged via sea or air freight based on your volume and delivery timeline.

Q4: What is the estimated delivery time?

In-stock products are shipped within 1~2 business days after receiving your advance payment. Custom or non-stock products have timelines that vary by product type and order quantity, which will be clearly detailed in your quotation.

Q5: Do you offer free samples and what is the MOQ?

Our MOQ is structured for flexibility with low requirements for small-batch purchases. We provide free samples of at least 1 kg for quality testing, with customers only covering the shipping costs.

Q6: How do you guarantee product quality?

We perform a 100% quality inspection for all products before delivery. In the rare event of quality issues arising from our production or inspection, we offer free replacements or refunds upon verification via photos or videos.