White Willow Bark Extract Powder

White Willow Bark Extract Powder is a standardized botanical ingredient produced from the bark of Salix alba L., a member of the Salicaceae family. The commercial extract is supplied as a fine botanical powder and is differentiated from ordinary milled willow bark by controlled salicin standardization and quantitative analytical testing.

Essencefield’s primary commercial grade contains 15% salicin, tested by HPLC. Available specifications also include 25%, 50%, 80%, 90%, 95%, and 98% salicin, covering conventional standardized extracts through progressively more concentrated salicin-rich materials.

SKU: BOT-BEX-0627 Categories: Botanical Extracts, Seed & Bark Extracts Tags: Bark, Joint Support, Phenolic Glycosides, Salicin, Salix alba, White Willow Bark

Application Areas

Capsules and Tablets

Standardized salicin grades are used in botanical supplement formulations where a defined marker concentration is required. Development work should evaluate capsule fill weight, powder flow, compressibility, and blend uniformity.

Powder Blends and Sachets

White willow bark extract can be incorporated into multi-botanical powders and sachets. Particle compatibility, bitterness, natural brown color, segregation risk, and consistent marker distribution are important during blending and filling.

Gummies and Solid Delivery Systems

Concentrated materials can reduce botanical powder loading in compact formats. Product development should evaluate heat exposure, moisture, pH, flavor masking, color contribution, and marker stability during processing.

Beverage Powders

The ingredient may be used in powdered drink formulations where botanical extracts are acceptable. Wetting, dispersibility, haze, sedimentation, bitterness, astringency, and finished-product appearance should be assessed during formulation trials.

Typical Specifications

Specification	Commercial Information
Product Name	White Willow Bark Extract Powder
Botanical Name	Salix alba L.
Botanical Family	Salicaceae
Plant Part	Bark
Ingredient Type	Standardized Botanical Extract
Product Form	Fine Powder
Primary Marker	Salicin
Primary Commercial Grade	15% Salicin
Available Salicin Grades	15% · 25% · 50% · 80% · 90% · 95% · 98%
Assay Method	HPLC
Appearance — 15% Grade	Fine light-brown to brown powder
Sensory Profile	Characteristically bitter and mildly astringent
Dispersibility — 15% Grade	Water-dispersible
Particle Size — 15% Grade	Typically 100 mesh
Moisture — 15% Grade	≤5.0%
Shelf Life	24 months unopened
Standard Bulk Pack	25 kg
Typical Commercial MOQ	25 kg

Marker Compounds & Standardization

Salicin is the principal quantitative marker used to define standardized white willow bark extract. It is an aryl β-D-glucoside with CAS 138-52-3, molecular formula C13H18O7, molecular weight 286.28 g/mol, and PubChem CID 439503. These identifiers describe salicin itself rather than the complete multi-component botanical extract.

Salicin Reference Property	Information
Marker Compound	Salicin
CAS Number	138-52-3
PubChem CID	439503
Molecular Formula	C13H18O7
Molecular Weight	286.28 g/mol
Chemical Class	Aryl β-D-glucoside / phenolic glycoside

Willow bark contains more than one phenolic constituent. In addition to salicin, the botanical matrix includes related phenolic glycosides and polyphenolic compounds such as salicortin, tremulacin, salidroside, and flavonoid constituents.

Salicin assay should also be distinguished from extract ratio. A 10:1 extract describes the relationship between botanical input and resulting extract, whereas a 15% assay defines a measurable marker concentration. A higher extract ratio therefore does not automatically indicate a higher salicin content.

Grade identity changes as concentration increases. The 15–25% specifications remain standardized botanical extracts, 50% represents a more concentrated material, and 80–98% specifications are progressively salicin-rich ingredients with substantially lower formulation inclusion weights.

Technical & Quality Considerations

HPLC assay and botanical identity are the primary analytical controls for standardized grades. Evaluation should distinguish quantitative salicin measurement from broader chromatographic and botanical identity, particularly when comparing conventional extracts with highly concentrated materials derived from the same botanical source.

The 15% grade is a fine light-brown to brown powder, typically around 100 mesh, with moisture controlled to no more than 5.0%. Its bitter and mildly astringent character can affect directly consumed or flavored formulations. Water dispersibility should not be interpreted as complete dissolution, especially in beverage systems where haze or sediment may develop.

Concentrated grades require tighter control of weighing and blend uniformity because their inclusion levels are lower. Premixing or geometric dilution can improve distribution before final blending. Dry-dose products should be evaluated for flow, compression, and segregation, while beverage and sachet systems require attention to wetting, dispersion, sensory impact, and sedimentation.

Packaging & Commercial Supply

Essencefield supports product evaluation, formulation trials, commercial orders, and ongoing ingredient supply. Packaging, storage, and shipping arrangements are determined by product characteristics, order quantity, stability requirements, and destination-market needs.

Supply Item	General Information
Sample	Available upon request for formulation, testing, and supplier evaluation
Order Quantities	100 g · 1 kg · 5 kg · 25 kg · 100 kg · 500 kg · Bulk
Sample Lead Time	Typically 5–7 days after sample confirmation
Production Lead Time	Typically 15–30 days after order and specification confirmation
Packaging	Suitable protective inner packaging with bags, cartons, drums, or other appropriate outer packaging
Storage	Store in tightly sealed, suitable protective packaging in a cool, dry environment. Protect from moisture, heat, and direct sunlight. Specific storage conditions follow the approved product specification.
Documentation	COA · Product Specification · TDS · SDS · Applicable declarations (as applicable)

Final order quantities, lead times, packaging, documentation, and shipping arrangements are confirmed according to the selected product and commercial requirements.