Reactive Yellow HeR

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Reactive Yellow HeR is a high-exhaust, mono-functional reactive dye used predominantly in the textile industry for dyeing and printing cellulosic fibers like cotton, viscose, and their blends. This dye contains a reactive group that forms a covalent bond with hydroxyl groups in cellulose under alkaline conditions, ensuring excellent wash fastness and color retention. Reactive Yellow HeR is valued for its bright yellow hue, good solubility, and compatibility with continuous, semi-continuous, and batch dyeing processes.

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

Description

Table of Contents

Reactive Yellow HeR

Primary Uses

Textile Dyeing Industry

Used extensively for dyeing cotton, viscose, modal, and other cellulosic fibers using exhaust and continuous dyeing methods.
Suitable for yarn dyeing, fabric dyeing, and garment dyeing, especially where high wash and light fastness are required.
Commonly applied in home textiles (e.g., bedsheets, towels, curtains), apparel, and industrial textiles.
Ideal for use in reactive dye blends to produce customized shades for fashion or interior fabrics.

Textile Printing

Employed in screen and rotary printing on cellulose-based fabrics.
Used to print multicolor patterns and solid tones in reactive printing pastes for high-definition, durable prints.

Secondary Uses

Crafts & Artisan Dyeing

Sometimes used in hand dyeing or artisanal textile production for vibrant and durable yellow shades.

Education & Research

Used in textile chemistry labs and dyeing technology courses for training and performance testing.

Blended Fiber Processing

Applied in dyeing cotton-polyester or cotton-lycra blends, with appropriate auxiliaries to manage dye affinity and fixation.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): Varies (typically contains a mono-reactive vinyl sulfone or monochlorotriazine group)
Common/Trade Name: Reactive Yellow HeR
CAS Number: Proprietary/varies by manufacturer
HS Code: 3204.16.00 (Reactive dyes)
Synonyms: Yellow HE-R; Mono-reactive Yellow dye; High-Exhaust Yellow dye

2. Physical & Chemical Properties

Physical State: Powder or granular form
Color & Odor: Bright yellow; odorless or faint dye-like odor
Solubility: Soluble in water
pH Stability: Stable in alkaline dye baths (typically pH 10–11 for fixation)
Heat Sensitivity: Stable under normal textile processing temperatures

3. Safety & Hazard Attributes

GHS Classification: May cause eye and skin irritation; avoid inhalation of dust
Toxicity: Low toxicity under recommended use; avoid ingestion or prolonged exposure
Exposure Limits: Not established; follow general dye handling precautions

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture and direct sunlight
Container Type: Packed in moisture-proof HDPE drums, bags, or fiber cartons
Shelf Life: Typically 12–24 months when stored properly
Handling Precautions: Avoid creating dust; use appropriate PPE during weighing and mixing

5. Regulatory & Compliance Attributes

Compliant with major textile safety standards (Oeko-Tex®, ZDHC MRSL, REACH)
May be APEO-free and formaldehyde-free depending on supplier specification
Often used in certified eco-friendly and low-impact dyeing processes

6. Environmental & Health Impact

Biodegradability: Limited; dye may persist in effluent without treatment
Ecotoxicity: Can be harmful to aquatic life if discharged untreated
Bioaccumulation: Low potential
Wastewater Treatment: Requires reactive dye removal techniques such as coagulation, ozonation, or adsorption

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves, goggles, dust mask when handling powder form
Handling Guidelines: Avoid inhalation of dust and contact with eyes or skin; work in well-ventilated dye houses
Storage Measures: Keep containers tightly sealed and stored in a dry environment at room temperature

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if respiratory symptoms occur
Skin Contact: Wash with soap and water; seek medical attention if irritation persists
Eye Contact: Rinse immediately with water for 15 minutes; consult a physician
Ingestion: Rinse mouth with water; seek immediate medical help

Firefighting Measures

Fire Hazards: May burn if exposed to high temperatures; not highly flammable
Extinguishing Media: Use dry chemical, foam, CO₂, or water spray
Special Precautions: Use protective equipment and breathing apparatus in case of fire
Hazardous Combustion Products: Oxides of carbon, nitrogen, and sulfur