Reactive Yellow HeR

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

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

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

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

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

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