Reactive Orange HeR

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Reactive Orange HeR is a mono-functional, high-exhaust class reactive dye designed for dyeing and printing of cellulosic fibers, particularly cotton and viscose. It reacts covalently with hydroxyl groups on cellulose under alkaline conditions, resulting in excellent wash, light, and perspiration fastness. Known for its brilliant orange shade, Reactive Orange HeR offers high fixation efficiency, compatibility with other HE dyes, and suitability across multiple dyeing methods such as exhaust, pad-batch, and pad-dry-cure processes.

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Category: Dyes and Pigments Tags: Dye manufacturing, Fabric Dyeing & Printing, Reactive Dye – Orange Shade, Reactive Orange HeR

Description

Table of Contents

Reactive Orange HeR

Primary Uses

Textile Dyeing Industry

Used for dyeing cotton, viscose, lyocell, and their blends using high-exhaust methods.
Applied in package dyeing, yarn dyeing, and fabric dyeing, especially in industries requiring brilliant and durable orange shades.
Suitable for home textiles like towels, curtains, and bedsheets, as well as garments and uniforms requiring consistent coloration.
Commonly used in continuous dyeing operations for large-scale production.

Textile Printing

Employed in rotary and flatbed screen printing for bright orange designs on natural fiber fabrics.
Compatible with reactive printing pastes in multi-color designs requiring long-lasting color fastness.

Secondary Uses

Custom Shade Development

Used in formulation of reactive dye blends to create custom shades for seasonal fashion or branding requirements.

Handcraft & Artisan Textiles

Applied in small-batch and artisan dyeing, including batik and tie-dye, due to its vibrant hue and good reproducibility.

Educational and Laboratory Use

Used in academic settings for training in textile chemistry, dye performance testing, and fastness assessments.

Blended Fabrics

Can be used with auxiliaries to dye cotton-polyester or cotton-elastane blends, controlling migration and fixation.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Varies by manufacturer; typically mono-reactive derivative of azo dyes
Common/Trade Name: Reactive Orange HeR
CAS Number: Proprietary/formulation-specific
HS Code: 3204.16.00
Synonyms: Orange HE-R; High-exhaust reactive orange; Mono-reactive orange dye

2. Physical & Chemical Properties

Physical State: Powder or granular form
Color & Odor: Bright orange; odorless or faint characteristic odor
Solubility: Soluble in water
pH Stability: Works optimally in alkaline medium (pH 10–11) during fixation
Heat Stability: Stable at standard dyeing temperatures (up to ~80°C)

3. Safety & Hazard Attributes

GHS Classification: May cause skin and eye irritation; avoid inhalation of dust
Toxicity: Low toxicity when used in industrial applications
Exposure Limits: No specific limits; handle with general chemical safety practices

4. Storage & Handling Attributes

Storage Conditions: Store in a dry, well-ventilated area away from moisture, heat, and direct sunlight
Container Type: Moisture-proof polyethylene-lined fiber drums or bags
Shelf Life: 12–24 months under proper storage
Handling Precautions: Use dust extraction and wear protective equipment during handling

5. Regulatory & Compliance Attributes

Compliant with Oeko-Tex® Standard 100 (if specified by supplier)
May be compliant with REACH, ZDHC MRSL, and other global textile chemical standards
APEO- and formaldehyde-free variants may be available for sustainable dyeing processes

6. Environmental & Health Impact

Biodegradability: Limited; requires treatment before wastewater discharge
Ecotoxicity: Potentially harmful to aquatic organisms if discharged untreated
Bioaccumulation: Low
Wastewater Treatment: Requires dye removal systems (e.g., activated carbon, flocculation, or oxidation treatment)

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves, goggles, dust mask recommended
Handling Guidelines: Avoid contact with eyes, skin, and clothing; avoid breathing dust
Storage Measures: Keep containers tightly closed and stored in a cool, dry, and well-ventilated area

First Aid Measures

Inhalation: Remove to fresh air; seek medical attention if symptoms appear
Skin Contact: Wash thoroughly with soap and water; remove contaminated clothing
Eye Contact: Rinse with plenty of water for at least 15 minutes; get medical attention if irritation persists
Ingestion: Rinse mouth with water; do not induce vomiting; seek immediate medical help

Firefighting Measures

Fire Hazards: Not highly flammable but may decompose at high temperatures
Extinguishing Media: Use dry chemical, CO₂, foam, or water mist
Special Precautions: Use protective equipment and self-contained breathing apparatus
Hazardous Combustion Products: May release carbon monoxide, carbon dioxide, and nitrogen oxides