Weak Acid Red
Weak Acid Red: The Ultimate Dye Solution for Precision Coloring
Weak Acid Red is a high-performance acid dye specifically formulated for applications requiring vibrant red hues with excellent light and wash fastness. This premium dye is widely used in textile, leather, paper, and specialty chemical industries.
Key Features of Weak Acid Red:
- Brilliant red coloration with outstanding color strength
- Superior lightfastness (Grade 6-7 on the Blue Scale)
- Excellent wash fastness (Grade 4-5)
- pH stability range: 3.5-6.5
- Low environmental impact formulation
- Compatible with most natural and synthetic fibers
Technical Specifications:
| Parameter | Specification |
|---|---|
| Chemical Class | Monoazo acid dye |
| Molecular Weight | 502.5 g/mol |
| Absorption Maximum | 516 nm |
| Solubility (20°C) | 120 g/L in water |
| Storage Temperature | 5-30°C |
| Shelf Life | 24 months in original packaging |
Application Methods for Weak Acid Red
- Textile Dyeing: Use at 1-3% owf (on weight of fabric) at 85-95°C for 45-60 minutes
- Leather Treatment: Apply 2-5% solution at 40-50°C with proper mordant
- Paper Coloring: 0.5-2% solution in sizing or coating applications
- Ink Formulation: 5-15% concentration depending on desired intensity
Weak Acid Red FAQ
What substrates is Weak Acid Red suitable for?
Weak Acid Red is primarily designed for protein fibers like wool, silk, and nylon, but also performs well on modified acrylics and some synthetic blends. It's particularly effective where pH-sensitive substrates require gentle dyeing conditions.
How does Weak Acid Red compare to other red dyes in terms of environmental impact?
Weak Acid Red has been formulated with eco-conscious manufacturing processes, containing no restricted aromatic amines (compliant with Oeko-Tex Standard 100) and featuring excellent biodegradability (80% degradation within 28 days in standard tests).
What safety precautions should be taken when handling Weak Acid Red?
While Weak Acid Red is classified as non-hazardous under normal conditions, we recommend standard protective measures: wear gloves and eye protection when handling concentrated solutions, ensure adequate ventilation, and avoid inhalation of dust particles.
Color Performance Data
| Test Method | Result | Standard |
|---|---|---|
| Color Fastness to Light | 6-7 | ISO 105-B02 |
| Color Fastness to Washing | 4-5 | ISO 105-C06 |
| Color Fastness to Perspiration | 4 | ISO 105-E04 |
| Color Fastness to Rubbing | 4 (dry), 3 (wet) | ISO 105-X12 |
Recommended Auxiliaries for Weak Acid Red
- Leveling Agents: 1-2 g/L of nonionic surfactant
- pH Control: Acetic acid or ammonium sulfate to maintain pH 4-5
- Aftertreatment:
1-2% cationic fixative for improved wet fastness Additional Weak Acid Red Applications
Beyond traditional textile uses, Weak Acid Red has proven effective in several specialty applications:
- Cosmetic manufacturing (hair dyes at regulated concentrations)
- Food packaging coloration (approved indirect food contact applications)
- Biological staining for microscopy applications
- Art conservation and restoration work
Packaging Options for Weak Acid Red
Package Size Container Type Gross Weight 1 kg Plastic bottle 1.2 kg 5 kg Plastic jerrycan 5.5 kg 25 kg Fiber drum 26 kg Weak Acid Red Technical Support
Our technical team provides comprehensive support for Weak Acid Red applications:
- Custom color matching services
- Troubleshooting for application challenges
- Technical data sheets and MSDS documentation
- Regulatory compliance guidance