What is Vat Blue 18 Navy Blue BR CAS 1324-54-5?

Vat Blue 18, also called C.I. Vat Blue 18 or C.I. 59815, is a high-fastness vat dye with CAS 1324-54-5. It is supplied as a dark blue or navy powder and is also known as Vat Navy Blue BR, Vat Blue GCD, or trichloroisoviolanthrone.

How does Vat Blue 18 compare with standard Indigo for workwear?

Vat Blue 18 generally provides better resistance to industrial washing and chlorine bleaching than standard Indigo. This makes it a preferred choice for durable navy workwear, uniforms, and other textiles that undergo harsh laundering.

What vatting conditions are recommended for Vat Blue 18?

Vat Blue 18 is reduced with sodium hydrosulfite in an alkaline bath, typically with caustic soda. Depending on the commercial grade and dyeing method, reduction is usually carried out in a warm or hot range around 50-60 C.

Which fibers can be dyed with Vat Navy Blue BR?

It is mainly used for cotton and cotton textiles, including direct printing, resist printing, and discharge printing. It can also be applied to viscose, silk, and cotton-blend fabrics where high wet fastness is needed.

What fastness levels can be expected from Vat Blue 18?

Vat Blue 18 is known for excellent light fastness, often around grade 6-7, and good washing fastness, commonly around grade 4-5. It also offers very good chlorine fastness, especially after proper oxidation and soaping.

Vat Blue 18 (Navy Blue BR) CAS 1324-54-5

Vat Blue 18 CAS 1324-54-5 is a premium anthraquinone-based vat dye chemically classified as a halogenated isoviolanthrone , functioning primarily as a high-performance colorant for cellulosic fibers. Commercially known as Vat Navy Blue BR, this insoluble pigment requires reduction to its water-soluble leuco form before application, after which it oxidizes within the fiber to produce deep, fast navy shades. It is extensively utilized in the textile industry for dyeing cotton uniforms, workwear, and denim where exceptional light fastness and chlorine bleach resistance are mandatory. We provide professional access to this material with competitive factory pricing and the ability to meet customized specifications (such as colloidal/ultrafine powder for continuous dyeing) for various manufacturing requirements. Our commitment to technical transparency ensures that every shipment is accompanied by comprehensive MSDS, TDS, COA documentation to support your quality assurance protocols, and we maintain capacity for consistent bulk supply to facilitate large-scale industrial operations.

CAS: 1324-54-5
Synonyms: Vat Blue GCD, Trichloroisoviolanthrone, Vat Navy Blue BR, C.I. Vat Blue 18
Einecs: 215-378-4
Molecular Formula: C34H13Cl3O2
Grade: Textile printing and dyeing chemicals
Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.

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Product Description

1 Physical & Chemical Properties

2 Why Manufacturers Choose Vat Navy BR

3 Key Application Fields

4 Safety and Precautionary Measures

5 Storage and Handling Conditions

Physical & Chemical Properties

To help you integrate this into your current dyeing process, here are the technical specifications of our Vat Navy BR.

Property	Specification
Product Name	Vat Dyes Navy BR
C.I. Number	Vat Blue 18
CAS Number	1324-54-5
Appearance	Dark Blue/Navy Powder or Granules
Ionic Character	Anionic (in reduced state)
Solubility	Insoluble in water; Soluble in alkaline reduction solution
Light Fastness	Excellent (Grade 6-7)
Washing Fastness	Excellent (Grade 4-5)
Chlorine Fastness	Very Good

Why Manufacturers Choose Vat Navy BR

Vat dyes are chemically unique because they are insoluble in water. They penetrate the fiber in a reduced (soluble) state and are then oxidized back into an insoluble form inside the fiber structure.

What does this mean for your final product?

Unmatched Durability: Once oxidized, the color is locked in. It is incredibly resistant to sunlight, heavy perspiration, and friction.
Industrial Wash Resistance: Unlike reactive or direct dyes, Vat Navy BR stands up to harsh industrial laundering and chlorine bleaching, making it the standard for workwear.
Consistent Leveling: It offers excellent leveling properties, reducing the risk of patchy dyeing even in continuous dyeing processes like Pad-Steam.

Key Application Fields

Vat Navy BR is not for fast fashion; it is for high-performance textiles.

Workwear & Uniforms: Ideal for mechanics, medical staff, and military personnel where uniforms undergo rigorous cleaning cycles.
Home Textiles: Perfect for towels, bed linens, and curtains that require resistance to chlorine bleaching and sunlight.
Cellulosic Fibers: Primarily used for dyeing cotton, linen, and viscose rayon.
Outdoor Fabrics: Due to its high light fastness, it is suitable for tents, awnings, and outdoor furniture covers.
Yarn Dyeing: Widely used in cheese dyeing for producing high-quality colored yarns for weaving.

Safety and Precautionary Measures

While Vat Navy BR is safe when handled correctly, standard industrial safety protocols must be followed during the dyeing process.

Respiratory Protection: The product is a fine powder. Operators should wear dust masks (N95 or equivalent) to prevent inhalation during weighing and mixing.
Skin & Eye Protection: Always wear safety goggles and protective gloves. Although the dye itself is not highly corrosive, the reducing agents (Caustic Soda/Hydrosulfite) used in the vatting process are strong alkalis.
Ventilation: Ensure the weighing and mixing room is equipped with proper exhaust ventilation to minimize dust suspension.

For additional textile colorant options, see Disperse Violet 26 and Acid Orange 67.

Storage and Handling Conditions

To ensure the dye retains its strength and dispersibility over time:

Moisture Control: Store in a cool, dry place. The powder is stable, but moisture can cause clumping, which may affect dispersion in the dye bath.
Sealing: Keep containers tightly closed when not in use.
Environment: Store away from strong oxidizing agents and direct sunlight.
Shelf Life: typically 3-5 years if stored properly in original packaging.

FAQ - Technical & Supply Chain

Q:
What is Vat Blue 18 Navy Blue BR CAS 1324-54-5?

A: Vat Blue 18, also called C.I. Vat Blue 18 or C.I. 59815, is a high-fastness vat dye with CAS 1324-54-5. It is supplied as a dark blue or navy powder and is also known as Vat Navy Blue BR, Vat Blue GCD, or trichloroisoviolanthrone.
Q:
How does Vat Blue 18 compare with standard Indigo for workwear?

A: Vat Blue 18 generally provides better resistance to industrial washing and chlorine bleaching than standard Indigo. This makes it a preferred choice for durable navy workwear, uniforms, and other textiles that undergo harsh laundering.
Q:
What vatting conditions are recommended for Vat Blue 18?

A: Vat Blue 18 is reduced with sodium hydrosulfite in an alkaline bath, typically with caustic soda. Depending on the commercial grade and dyeing method, reduction is usually carried out in a warm or hot range around 50-60 C.
Q:
Which fibers can be dyed with Vat Navy Blue BR?

A: It is mainly used for cotton and cotton textiles, including direct printing, resist printing, and discharge printing. It can also be applied to viscose, silk, and cotton-blend fabrics where high wet fastness is needed.
Q:
What fastness levels can be expected from Vat Blue 18?

A: Vat Blue 18 is known for excellent light fastness, often around grade 6-7, and good washing fastness, commonly around grade 4-5. It also offers very good chlorine fastness, especially after proper oxidation and soaping.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

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Sample & Supply

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Storage & Shipping

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