Evening Primrose Oil Bottle
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Evening Primrose Oil (Oenothera biennis)

Common Name: Evening Primrose Seed Oil

CAS: 90028-66-3 HS CODE: 151590 100% NATURAL

General Specification

Botanical NameOenothera biennis
Extraction MethodCold Pressed
Part UsedSeeds
OriginIndia
GradesNutraceutical / Cosmetic / Pharmaceutical

Organoleptic Properties

AppearanceClear pale yellow to golden liquid
OdourMild, characteristic
TasteBland
SolubilityInsoluble in water; soluble in oils

Physico-Chemical Data

Specific Gravity @ 25 °C0.915 – 0.930
Refractive Index @ 20 °C1.465 – 1.480
Acid Value≤ 4.0 mg KOH/g
Peroxide Value≤ 10.0 meq O₂/kg
Saponification Value185 – 195 mg KOH/g

Fatty Acid Composition (Typical)

Linoleic Acid (Omega-6): 65 – 80%

γ-Linolenic Acid (GLA): 8 – 12%

Oleic Acid (Omega-9): 6 – 11%

*Natural variation may occur due to origin and processing.

Sample Certificate of Analysis (COA)

Typical Analysis (Batch-wise COA provided with shipment)

Test Parameter Specification Typical Result
AppearanceClear pale yellow liquidConforms
Specific Gravity @ 25 °C0.915 – 0.9300.922
Refractive Index @ 20 °C1.465 – 1.4801.472
γ-Linolenic Acid (GLA)8 – 12 %9.8 %
Peroxide Value≤ 10.04.2
Microbial CountNilConforms

Conclusion: The tested batch conforms to specification and is suitable for nutraceutical, cosmetic, and pharmaceutical applications.