Walnut Hull powder( Textile Dye Powder)

 Product

• Product Name: Walnut Hull (Juglans regia)
  • Botanical Name: Juglans regia L.
  • Common Names: English Walnut, Persian Walnut, European Walnut, Common Walnut
  • Plant Part Used: Outer green hull (pericarp)
  • Form: Dried powder / Extract / Whole dried hulls
  • Origin: Himalayan / Mediterranean region

 Botanical & Trade Information

Juglans regia, commonly known as the English or Persian walnut, produces an outer green hull rich in juglone,
tannins, and phenolics. The hull has traditional applications in herbal, cosmetic, and dye industries. It is an important
by-product of walnut fruit processing and is valued for its astringent, antimicrobial, and colorant properties.
 Physical & Chemical Properties

• Appearance: Fine to coarse brown powder (depending on milling)
  • Odor: Mild, earthy, characteristic walnut aroma
  • Solubility: Partially soluble in water; soluble in alcohol
  • pH (1% solution): 4.5 – 6.5
  • Moisture Content: ≤ 10%
  • Major Constituents: Juglone, Tannins, Flavonoids, Phenolic acids, Vitamin C
  • Active Marker: Juglone (5-hydroxy-1,4-naphthoquinone)
  Applications

◾ Herbal & Medicinal:
   – Antimicrobial, antifungal, astringent, and detoxifying uses.
– Traditionally used in dental and skin formulations.
– Source of natural antioxidants for herbal supplements.

◾ Cosmetic & Personal Care:
   – Natural brown pigment in hair dyes, shampoos, and soaps.
– Skin-purifying and exfoliating agent in facial masks and scrubs.
– Anti-acne and anti-dandruff formulations.

◾ Industrial & Natural Dyeing:
   – Used as a natural dye for textiles, leather, and wood.
– Produces brown to dark brown hues without mordant.
– Source material for activated carbon and bio-based adsorbents.
Handling & Storage
• Store in a cool, dry, and well-ventilated area away from direct sunlight.
• Keep container tightly closed to avoid moisture absorption.
• Use gloves and protective clothing when handling fine powders.
• Avoid contact with eyes and prolonged skin exposure (may stain).
 Safety & Regulatory Notes

• Non-toxic for external and cosmetic use when handled properly.
  • Internal use should comply with recommended extract dosage.
  • Contains natural juglone — handle with care to prevent irritation.
  • Allergen: Tree nut–related botanical (declare on labels as applicable).
  • For export to the USA/EU, comply with cosmetic/herbal labeling norms (21 CFR, EC 1223/2009).
  Export Classification

• Harmonized System (HS) Code: 14049090 – Other Vegetable Products (Including Dried Herbs)
• Product Service Code (PSC): 6515 – Medical and Surgical Equipment (herbal category reference)
• Tariff Description: Botanical raw material / herbal extract (non-edible)