What is BWD-01 Water Decoloring Agent CAS 55295-98-2?

BWD-01 is a cationic dicyandiamide-formaldehyde ammonium chloride polymer used for color removal in industrial wastewater. It carries strong positive charge that destabilizes negatively charged soluble dyes and color-bearing particles.

Why is BWD-01 often used together with PAC?

BWD-01 effectively neutralizes dye color, but the resulting flocs can be small and light. Combining it with polyaluminum chloride or another inorganic coagulant can produce larger, more settleable flocs and reduce total chemical demand.

What pH gives the best decolorization with BWD-01?

For many textile wastewater streams, the best color removal occurs in a slightly acidic to neutral range, often around pH 7.0-8.0. Highly acidic or strongly alkaline wastewater may need pH adjustment before dosing.

Which types of dye wastewater can BWD-01 treat?

It is commonly used for textile printing and dyeing effluent containing reactive, acid, disperse, and direct dyes. It is also applied in pulp and paper wastewater where high color or COD needs to be reduced.

BWD-01 Water Decoloring Agent CAS 55295-98-2

BWD-01 Water Decoloring Agent, a cationic dicyandiamide-formaldehyde polymer, CAS 55295-98-2, is supplied for color removal in industrial wastewater treatment. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 55295-98-2
Synonyms: Dicyandiamide formaldehyde resin, PolyDCD, Decoloring flocculant, Colour removal agent, Cationic dicyandiamide copolymer, DCDA-Formaldehyde Resin
Molecular Formula: (C₂H₄N₄·CH₂O)ₙ
Grade: Industrial Grade
Package: 200 kg drum / 1000 kg IBC (customizable)

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Product Description

BWD-01 CAS 55295-98-2 is a cationic dicyandiamide-formaldehyde ammonium chloride polymer, also known as PolyDCD, with repeat-unit formula (C2H4N4.CH2O)n.

Synonyms: Dicyandiamide formaldehyde resin; PolyDCD; Decoloring flocculant; Colour removal agent; Cationic dicyandiamide copolymer; DCDA-Formaldehyde Resin.

CAS: 55295-98-2.

As a polymer resin, it is described by its repeat-unit formula (C2H4N4.CH2O)n rather than a fixed molecular weight.

It is supplied as a liquid or powder cationic polymer preparation.

It carries a positive charge that neutralizes the negative charge of dye molecules and forms flocs.

For many textile wastewater streams, the best color removal occurs in a slightly acidic to neutral range, often around pH 7.0–8.0.

It is commonly used for textile printing and dyeing effluent containing reactive, acid, disperse and direct dyes.

It is often combined with polyaluminum chloride (PAC) because the resulting flocs can be small and light.

The product is usually diluted with water before dosing and mixed for several minutes after addition.

Jar testing is recommended to determine the optimal dosage for a given effluent.

It is also applied to selected industrial color-removal and flocculation processes.

Store in a cool, dry, well-ventilated area in tightly closed containers, away from strong oxidizers.

Protect from freezing and direct sunlight to maintain product performance.

Confirm appearance, charge density, viscosity, pH and active content as required.

Use suitable eye and skin protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is BWD-01 Water Decoloring Agent CAS 55295-98-2?

A: BWD-01 is a cationic dicyandiamide-formaldehyde ammonium chloride polymer used for color removal in industrial wastewater. It carries strong positive charge that destabilizes negatively charged soluble dyes and color-bearing particles.
Q:
Why is BWD-01 often used together with PAC?

A: BWD-01 effectively neutralizes dye color, but the resulting flocs can be small and light. Combining it with polyaluminum chloride or another inorganic coagulant can produce larger, more settleable flocs and reduce total chemical demand.
Q:
What pH gives the best decolorization with BWD-01?

A: For many textile wastewater streams, the best color removal occurs in a slightly acidic to neutral range, often around pH 7.0-8.0. Highly acidic or strongly alkaline wastewater may need pH adjustment before dosing.
Q:
Which types of dye wastewater can BWD-01 treat?

A: It is commonly used for textile printing and dyeing effluent containing reactive, acid, disperse, and direct dyes. It is also applied in pulp and paper wastewater where high color or COD needs to be reduced.
Q:
How is BWD-01 typically prepared and dosed?

A: The product is usually diluted with water before dosing and mixed for several minutes after addition. Jar testing is recommended to determine the best dilution ratio, pH, and sequence with PAC or other coagulants for the specific effluent.

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