Indigo Blue Vat Blue, also known as Vat Blue 1, is a renowned dye with a rich history and versatile applications in the textile industry. This article provides an in-depth analysis of its features, specifications, and uses, while highlighting the expertise of its manufacturer, Anping County Wu Xin Chemical Dye Co., Ltd. (English name: INNER MONGOLIA WU XIN CHEMICAL CO. LTD). Whether you're a textile professional or a curious reader, this guide will offer valuable insights into this essential chemical.

Indigo Blue Vat Blue is a dark blue crystalline powder with the chemical formula C16H10N2O2. It is a natural dye derived from the indigo plant, though modern production often involves synthetic processes. The dye is renowned for its vivid color, durability, and resistance to fading, making it a staple in the textile industry. According to the National Institute of Standards and Technology (NIST), indigo's unique molecular structure contributes to its stability and colorfastness, which are critical for industrial applications.

The product is available in various forms, including granules and powder, and is packaged to meet global shipping and storage requirements. Its high purity (≥94%) and low moisture content (≤1%) ensure consistent performance, while its iron ion content (≤200ppm) minimizes impurities that could affect dyeing processes.
| Parameter | Specification |
|---|---|
| Appearance | Dark blue even grains |
| Purity | ≥94% |
| Water Content | ≤1% |
| Iron Ion Content | ≤200ppm |

Indigo Blue Vat Blue exhibits distinct solubility properties. It is insoluble in water, alcohol, and ether but soluble in polar solvents such as DMSO, chloroform, nitrobenzene, and concentrated sulfuric acid. This characteristic makes it ideal for vat dyeing processes, where the dye is reduced to a soluble form before being applied to fabrics. The dye's sublimation point is between 390–392°C (734–738°F), ensuring thermal stability during industrial applications.
Indigo Blue Vat Blue is primarily used for dyeing cotton yarn, particularly in the production of denim fabric for blue jeans. A single pair of jeans typically requires 3–12 grams of dye, depending on the desired depth of color. Its compatibility with stone washing and acid washing processes allows for the creation of distinctive textile effects, such as faded or worn appearances.
The dye is also employed in wool and silk dyeing, though in smaller quantities. Its colorfastness to light, washing, and abrasion makes it a preferred choice for high-quality textiles. For example, the NIST's research on textile materials emphasizes the importance of dyes like indigo in achieving long-term color retention, which is critical for consumer satisfaction.
Indigo Blue Vat Blue is packaged to ensure efficiency in transportation and storage. The standard packaging options include:
These specifications highlight the product's scalability for both small and large-scale operations. The packaging is designed to minimize exposure to moisture and contaminants, ensuring the dye's quality during transit.
Proper storage is critical to maintaining the integrity and effectiveness of Indigo Blue Vat Blue. Key recommendations include:
During transportation, the product must be protected from sunlight, rain, and high temperatures. It should also be isolated from oxidants and edible chemicals to avoid contamination or hazardous interactions.
Founded with a commitment to quality and innovation, Anping County Wu Xin Chemical Dye Co., Ltd. is a leading manufacturer of indigo dyes and chemical products. The company's expertise in textile chemistry and sustainable practices has earned it a reputation for reliability and excellence.
The company's product portfolio includes a wide range of dyes tailored to meet the needs of the textile industry. Its research and development team continuously works to improve formulations, ensuring compliance with international standards. For more information about their services and products, visit their official product page.
Indigo Blue Vat Blue stands as a cornerstone of the textile industry, offering vibrant color, durability, and versatility. Its precise specifications, eco-friendly properties, and robust performance make it a preferred choice for manufacturers worldwide. With the support of a reliable supplier like Anping County Wu Xin Chemical Dye Co., Ltd., businesses can ensure consistency and quality in their dyeing processes.
For those seeking light indigo color products, INNER MONGOLIA WU XIN CHEMICAL CO. LTD provides a comprehensive solution, backed by technical expertise and industry-leading standards. Whether you're a manufacturer, exporter, or supplier, this dye is a valuable asset in your operations.
National Institute of Standards and Technology (NIST). (n.d.). About NIST. Retrieved from https://www.nist.gov
INNER MONGOLIA WU XIN CHEMICAL CO. LTD. (n.d.). Indigo Blue Vat Blue Product Page. Retrieved from https://www.wuxin-group.com/indigo-blue-vat-blue.html
PubChem. (n.d.). Indigo. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Indigo
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Sulphur Black
1.Name: sulphur black; Sulfur Black; Sulphur Black 1;
2.Structure formula:
3.Molecule formula: C6H4N2O5
4.CAS No.: 1326-82-5
5.HS code: 32041911
6.Product specification:Appearance:black phosphorus flakes; black liquid
Bromo Indigo; Vat Bromo-Indigo; C.I.Vat Blue 5
1.Name: Bromo indigo; Vat bromo-indigo; C.I.Vat blue 5;
2.Structure formula:
3.Molecule formula: C16H6Br4N2O2
4.CAS No.: 2475-31-2
5.HS code: 3204151000 6.Major usage and instruction: Be mainly used to dye cotton fabrics.
Indigo Blue Vat Blue
1.Name: indigo blue,vat blue 1,
2.Structure formula:
3.Molecule formula: C16H10N2O2
4.. CAS No.: 482-89-3
5.Molecule weight: 262.62
6.HS code: 3204151000
7.Major usage and instruction: Be mainly used to dye cotton fabrics.