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Direct Red 31

Direct Red 31 | CAS 5001-72-9 Manufacturer & Supplier in China

Direct Red 31 (CAS 5001-72-9) manufacturer in China. ≥99% purity, stable supply and fast shipping. Request Price, COA & MSDS from Conscientia Industrial.

Product Overview

Direct Red 31 (CAS 5001-72-9), commonly known as Direct Fast Pink 12B or Direct Red 12B, is a high-performance anionic dye. As a premier China manufacturer and supplier within the Dyes and Pigments sector, Conscientia Industrial provides premium-grade Direct Red 31 characterized by excellent water solubility and high affinity for cellulose fibers. This versatile coloring agent is extensively used in the textile, paper, and leather industries, ensuring vibrant hues and consistent application performance for the global industrial market.


Technical Specifications

  • Product Name: Direct Red 31

  • CAS Number: 5001-72-9

  • Quality Standard: In-house / Industrial Grade

  • Purity (Spectrophotometry): ≥99.0%

  • Molecular Formula: C32H21N5Na2O8S2

  • Molecular Weight: 713.65

  • Appearance: Red to dark red powder

  • Shade: Similar to standard (Bluish Red)

  • Water Solubility: 30g/L at 90℃

  • Light Fastness: Grade 3-4

  • Country of Origin: China

  • Pricing: Competitive price based on quantity

  • Currency: USD


CAS 5001-72-9 Direct Red 31 molecular structure - Conscientia Industrial China


Why Partner with Conscientia Industrial

  • Color Chemistry Expertise: Specialized in the synthesis and standardization of direct dyes with superior color constancy and solubility.

  • Advanced Quality Control: Every batch of Direct Red 31 is tested for shade, strength, and impurity levels to ensure compliance with international textile and industrial standards.

  • Documentation and Compliance: We provide comprehensive technical dossiers, including Certificate of Analysis (COA), MSDS, and TDS (Technical Data Sheet).

  • Scalable Industrial Supply: Reliable production capacity from our China facility to support large-scale industrial dyeing and printing requirements.

  • As a leading China manufacturer, we provide Direct Red 31 CAS 5001-72-9 with factory-direct pricing.


Packaging & Storage

  • Standard Packaging: 25kg/iron drum, 25kg/woven bag, or custom packaging according to customer requirements.

  • Storage Conditions: Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed and away from moisture and direct sunlight to prevent clumping or color degradation.

  • Safety Handling: This is an industrial-grade dye intended for professional manufacturing and laboratory use only.

  • Our logistics team ensures safe delivery of Direct Red 31 CAS 5001-72-9 by courier / air / sea.


Request a Quote & COA for Direct Red 31 CAS 5001-72-9 Today.

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