Propylene Glycol Dicaprylate CAS 7384-98-7 | Cosmetic Grade Emollient Ester

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Min: 10 Gram
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Port: Shanghai Port, Qingdao Port

Name: Propylene Glycol Dicaprylate

Cas: 7384-98-7

Purity: 99%

MOQ: 1KG

Directory Guidance on Propylene Glycol Dicaprylate

Chemical Structure

Basic Info

Propylene Glycol Dicaprylate (CAS Registry Number: 7384-98-7), systematically identified as 1,2-propanediol dioctanoate, is a diester synthesized through the esterification of propylene glycol with caprylic acid (C8 fatty acid). Defined by the molecular formula C19H36O4, this specialty lipid presents as a clear, low-viscosity liquid with a virtually odorless and colorless appearance.

At Shandong Zhishang Chem Co., Ltd., our Propylene Glycol Dicaprylate is engineered under strict esterification and bleaching conditions to produce a high-purity, low-acid ester specifically tailored for cosmetic and personal care applications. It functions as a fast-spreading, dry-feel emollient, solvent carrier for active compounds, and pigment wetting agent in skin creams, sunscreens, hair conditioning formulations, and color cosmetics, providing a silky after-feel without heavy residue.

Technical Specifications

CAS Registry Number: 7384-98-7 (EINECS: 230-961-9)
INCI Nomenclature: Propylene Glycol Dicaprylate
Chemical Structure: Diester of propylene glycol and caprylic acid
Molecular Formula and Weight: C19H36O4 / 328.49 g/mol
Appearance: Clear, colorless to light yellow liquid at 25 degrees Celsius
Ester Assay (GC): 98.0% minimum
Acid Value: 0.5 mg KOH/g maximum
Saponification Value: 320 to 340 mg KOH/g
Peroxide Value: 1.0 meq/kg maximum
Refractive Index (nD20): 1.435 to 1.442
Specific Gravity (20/20 degrees C): 0.910 to 0.925 g/cm3
Moisture Content (Karl Fischer): 0.1% maximum

Product Packaging

Propylene Glycol Dicaprylate Application

Propylene Glycol Dicaprylate offers a unique balance of solvency, polarity, and sensory characteristics across diverse personal care sectors:

Light Skin Emollient: Delivers immediate skin softening and smooth lubricity in facial lotions, body milks, and moisturizing gels without leaving an occlusive or oily film.

Pigment & UV Filter Dispersant: Solubilizes organic sunscreens (such as avobenzone) and enhances pigment wetting in foundation makeup, mineral sunscreens, and lipsticks.

Hair Care & Scalp Conditioners: Imparts gloss and combability to hair fibers in leave-in serums and spray conditioners without weighing down fine hair strands.

Solvent Carrier for Active Ingredients: Acts as an efficient lipophilic delivery vehicle for fat-soluble vitamins, botanical extracts, and essential fatty acids.

FAQ

Q1: What is the primary difference between Propylene Glycol Dicaprylate and Propylene Glycol Dicaprylate/Dicaprate?

A1: Propylene Glycol Dicaprylate is esterified specifically with C8 caprylic acid, resulting in a slightly lighter, lower-viscosity profile, whereas the mixed dicaprylate/dicaprate version incorporates a blend of C8 and C10 fatty acids for marginally higher viscosity.

Q2: How does Propylene Glycol Dicaprylate improve sunscreen and makeup formulations?

A2: Its high polarity and low viscosity enable superior solubilization of solid organic UV filters and uniform dispersion of inorganic pigments (like titanium dioxide), preventing clumping and improving emulsion stability.

Q3: What storage parameters ensure maximum product stability?

A3: Store in tightly sealed original containers in a cool, dry, well-ventilated location protected from direct sunlight and heat sources. Under recommended ambient storage conditions, expected shelf life is 24 months from the manufacturing date.

Q4: What packaging choices are available for international bulk freight?

A4: Propylene Glycol Dicaprylate is supplied in 50 kg plastic drums, 190 kg UN-approved HDPE drums, and 950 kg IBC totes. Custom sample containers are available upon request for laboratory trial work.

Related References

Pubchem-Propylene Glycol Dicaprylate

Propylene Glycol DicaprylateChemicalbook-Diallyldimethylammonium Chloride

Quality Management & International Compliance

To support global personal care brand owners, contract manufacturers, and chemical distributors, Shandong Zhishang Chem maintains transparent quality management standards:

ISO 9001:2015 & ISO 22716 Cosmetic GMP Framework: Rigorous batch control extending from fatty acid sourcing and ester synthesis to deodorization, micro-filtration, and sanitary packaging.

Global Regulatory Alignment: Full compliance support for European Union REACH registration, ASEAN Cosmetic Directive, and global inventory listings.

Clean Beauty & Toxicological Safety: Formulated without parabens, phthalates, mineral oil, or silicone compounds, supporting clean label formulation initiatives.

Preservative-Free & Non-Comedogenic Profile: Chemically stable lipid base offering low skin irritation potential and excellent dermal compatibility.

Analytical Quality Assurance & Batch Verification Workflow

Consistent spreadability, low odor intensity, and oxidation stability are vital for premium cosmetic formulations. Every production batch of Propylene Glycol Dicaprylate undergoes four-stage internal testing prior to Certificate of Analysis issuance:

Gas Chromatography Assay (GC-FID): Quantifies diester concentration while monitoring monoester and residual free fatty acid fractions to ensure optimum tactile properties.

Potentiometric Acidity and Peroxide Testing: Measures acid value and peroxide levels to guarantee low oxidation potential and prevent odor development during shelf storage.

Viscosity and Rheological Profiling: Confirms consistent fluid behavior and rapid skin-spreading kinetics across manufacturing temperature ranges.

Microbiological & Trace Metal Screening: Verifies Total Aerobic Microbial Count below 100 CFU/g and confirms heavy metal limits meet international cosmetic safety standards.

Manufacturer of Propylene Glycol Dicaprylate

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ZhishangChem company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.

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Raymond

I would like to thank Shandong Zhishang New Materials Co., Ltd. for a very efficient transaction with their team.

Happy cooperation

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The goods have been delivered intact. good packing. honest seller

Very satisfied

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As usual, a great service from dear zhishang chemical, and the perfect quality of product! Highly recommend this company, and hope for long and productive cooperation :)

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