ELRASA – DEP
Diethyl phthalate
ELRASATM – DEP
Diethyl phthalate (DEP) is an ester derived from phthalic acid, containing two ethyl groups attached to the phthalate backbone. that belongs to the family of phthalate esters. It is a clear and colorless liquid with a faint, sweet odor. DEP is soluble in most organic solvents but has limited solubility in water. DEP is versatile and finds application in various industrial and commercial products.
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CAS Number
84-66-2
HS Code
2917.34.00
Molecular Formula
C₁₂H₁₄O₄
INCI Name
Diethyl Phthalate (DEP)
Diethyl phthalate
ELRASATM – DEP
Diethyl phthalate (DEP) is an ester derived from phthalic acid, containing two ethyl groups attached to the phthalate backbone. that belongs to the family of phthalate esters. It is a clear and colorless liquid with a faint, sweet odor. DEP is soluble in most organic solvents but…
CAS Number
84-66-2
INCI Name
Diethyl Phthalate (DEP)
HS Code
2917.34.00
Molecular Formula
C₁₂H₁₄O₄
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ELRASA – DEP
Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Odor | Odorless |
| Density | 1.12 at 68 °F |
| Viscosity | 31.3 centistokes at 0 °C |
| Appearance | Colorless oily liquid |
| Refractive Index | 1.5002 at 25 °C/D |
| Molecular Weight (G/Mol) | 222.24 |
| Density Or Specific Gravity | 1.12 at 68 °F |
Chemical Properties
| Property | Specification |
|---|---|
| Hazardous Reactions | When heated to decomp it emits acrid smoke and irritating fumes. |
Thermal Properties
| Property | Specification |
|---|---|
| Flash Point | 284 °F |
| Boiling Point | 568 °F at 760 mmHg |
| Melting Point | 27 °F |
| Autoignition Temperature | 855 °F |
Processing Methods & Reference Formulations
A. Perfume
Use at 5–30% as a solvent and fixative to dilute perfume oils, improve stability, and slow down evaporation of volatile notes. Blend with the perfume concentrate before adding alcohol to ensure a uniform, stable solution.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Linalool | 10% |
| Benzyl Acetate | 10% |
| Phenylethyl Alcohol | 20% |
| Iso E Super | 15% |
| Hedione | 10% |
| Galaxolide | 10% |
| Musk Ketone | 5% |
| Para Anisic Aldehyde | 2% |
| Cinnamic Alcohol | 1% |
| Diethyl Phthalate (DEP) | 17% |
B. Shampoo
Use at 0.1–2%, mainly as a fragrance solvent or fixative to help retain and stabilize scent in the final product. Add during the fragrance phase, ideally at the cool-down stage, to prevent volatility and ensure stability. Pre-mix with fragrance oils to improve solubility and avoid cloudiness or separation in the aqueous shampoo base.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water | 63% |
| Sodium Laureth Sulfate | 15% |
| Cocamidopropyl Betaine | 6% |
| Glycerin | 3% |
| Citric Acid | 0.3% |
| Polyquaternium-10 | 0.2% |
| Disodium EDTA | 0.1% |
| Preservative (e.g. Phenoxyethanol) | 0.8% |
| Fragrance blend | ~11% |
| Diethyl Phthalate | 0.1% |
C. Soap
Use at 0.2–2% as a solvent or fixative to enhance fragrance longevity and help dissolve essential oils or aromatic compounds. Add during the fragrance phase, when the soap mixture has cooled, to avoid evaporation or degradation.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Sodium Palmate | 40% |
| Sodium Palm Kernelate | 25% |
| Water | 15% |
| Glycerin | 5% |
| Sorbitol | 5% |
| Titanium Dioxide | 1% |
| Tetrasodium EDTA | 0.1% |
| BHT | 0.2% |
| Fragrance Blend | ~8% |
| Diethyl Phthalate | 0.2% |
D. Cosmetic Lotion
Use at 0.5–2%, primarily as a solvent and fixative to help dissolve and stabilize fragrance components in the lotion. Add during the oil phase or with fragrance during the cool-down stage for better integration and stability.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water | ~70% |
| Glycerin | 5% |
| Cetearyl Alcohol | 4% |
| Caprylic/Capric Triglyceride | 5% |
| Glyceryl Stearate | 3% |
| Dimethicone | 2% |
| Phenoxyethanol | 0.8% |
| Ethylhexylglycerin | 0.2% |
| Carbomer | 0.3% |
| Triethanolamine | 0.2% |
| Tocopherol (Vitamin E) | 0.2% |
| Fragrance Blend | ~9% |
| Diethyl Phthalate | 0.8% |
Dosing Guidelines
A. Dosing by Application
| Products | Authorized dosage |
|---|---|
| Perfume/Fragrance | 0.1-30% |
| Cosmetics/Personal Care | <0.1% – 1% |
About Diethyl phthalate
Diethyl Phthalate (DEP) is a versatile and highly stable chemical additive widely used across multiple industrial sectors. With its molecular structure C12H14O4, DEP exhibits excellent solvent properties, making it an ideal choice for manufacturers seeking consistency and performance.
Its low volatility ensures that it remains well-integrated in formulations without significant losses during processing or long-term storage. This feature makes DEP a preferred choice for industries requiring high stability—especially cosmetics, pharmaceuticals, and coatings.
One of the key advantages of DEP is its compatibility with a wide range of polymers and organic compounds. This compatibility enhances product flexibility, improves mechanical performance, and supports the creation of smooth, uniform formulations.
Manufacturers across the chemical, fragrance and personal care industries rely on DEP for its thermal stability and resistance to environmental degradation. These features help extend the shelf life of end products and ensure consistent performance under various conditions.
As a trusted diethyl phthalate manufacturer, suppliers ensure that DEP meets stringent safety standards for industrial and consumer applications. The product’s proven performance and reliability make it a preferred ingredient in both large-scale and specialty production.
Whether used in plasticizer applications, fragrance fixation, or film-coating processes, Diethyl Phthalate delivers dependable functionality, helping businesses maintain high quality across every production cycle. Its strong market demand continues to grow, especially among industries that prioritize stability, safety, and compatibility.
Features of Diethyl Phthalate (DEP)
Chemical Structure: C12H14O4 composition ensures excellent solvent functionality and formulation stability.
Thermal Stability: Performs efficiently under varied temperature conditions without losing integrity.
Low Volatility: Minimizes evaporation, enhancing product longevity and reducing material loss.
High Compatibility: Blends well with polymers, resins, fragrances, and organic compounds.
Environmental Resistance: Maintains performance without rapid degradation under environmental exposure.
Phthalic anhydride is esterified with ethanol via Fischer–Speier esterification, removing water azeotropically to push the equilibrium toward product. (Yield 90–95% diethyl phthalate recovery)
Phthalic anhydride is esterified with ethanol via Fischer–Speier esterification, removing water azeotropically to push the equilibrium toward product. (Yield 90–95% diethyl phthalate recovery) Raw Materials: Phthalic anhydride, Ethanol, Sulfuric acid or p-toluenesulfonic acid (catalyst), Optional azeotroping solvent (e.g., toluene) Overall Formula: C₆H₄(CO)₂O + 2 C₂H₅OH → C₆H₄(CO₂C₂H₅)₂ + H₂O
About Diethyl phthalate
Diethyl Phthalate (DEP) is a versatile and highly stable chemical additive widely used across multiple industrial sectors. With its molecular structure C12H14O4, DEP exhibits excellent solvent properties, making it an ideal choice for manufacturers seeking consistency and performance.
Its low volatility ensures that it remains well-integrated in formulations without significant losses during processing or long-term storage. This feature makes DEP a preferred choice for industries requiring high stability—especially cosmetics, pharmaceuticals, and coatings.
One of the key advantages of DEP is its compatibility with a wide range of polymers and organic compounds. This compatibility enhances product flexibility, improves mechanical performance, and supports the creation of smooth, uniform formulations.
Manufacturers across the chemical, fragrance and personal care industries rely on DEP for its thermal stability and resistance to environmental degradation. These features help extend the shelf life of end products and ensure consistent performance under various conditions.
As a trusted diethyl phthalate manufacturer, suppliers ensure that DEP meets stringent safety standards for industrial and consumer applications. The product’s proven performance and reliability make it a preferred ingredient in both large-scale and specialty production.
Whether used in plasticizer applications, fragrance fixation, or film-coating processes, Diethyl Phthalate delivers dependable functionality, helping businesses maintain high quality across every production cycle. Its strong market demand continues to grow, especially among industries that prioritize stability, safety, and compatibility.
Features of Diethyl Phthalate (DEP)
Chemical Structure: C12H14O4 composition ensures excellent solvent functionality and formulation stability.
Thermal Stability: Performs efficiently under varied temperature conditions without losing integrity.
Low Volatility: Minimizes evaporation, enhancing product longevity and reducing material loss.
High Compatibility: Blends well with polymers, resins, fragrances, and organic compounds.
Environmental Resistance: Maintains performance without rapid degradation under environmental exposure.
Phthalic anhydride is esterified with ethanol via Fischer–Speier esterification, removing water azeotropically to push the equilibrium toward product. (Yield 90–95% diethyl phthalate recovery)
Phthalic anhydride is esterified with ethanol via Fischer–Speier esterification, removing water azeotropically to push the equilibrium toward product. (Yield 90–95% diethyl phthalate recovery) Raw Materials: Phthalic anhydride, Ethanol, Sulfuric acid or p-toluenesulfonic acid (catalyst), Optional azeotroping solvent (e.g., toluene) Overall Formula: C₆H₄(CO)₂O + 2 C₂H₅OH → C₆H₄(CO₂C₂H₅)₂ + H₂O
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| United States | - | FDA does not restrict DEP; CIR and FDA consider DEP safe as used in cosmetics. Industry follows IFRA (no limit). | FDA |
| European Union | - | DEP is not listed as a restricted substance. Safe as used per SCCS and IFRA. | SCCS (Scientific Committee on Consumer Safety) |
| India | - | No explicit national restriction; follows IFRA and international safety assessments | - |
| Japan | - | No explicit national restriction; follows IFRA and international safety assessments | MHLW – Ministry of Health, Labour and Welfare |
| China | - | No explicit national restriction; regulated under NMPA, aligns with IFRA for fragrance use | NMPA - National Medical Products Administration |
| Australia | - | No explicit national restriction; follows IFRA and international safety assessments | - |
| Korea, Republic of | - | No explicit national restriction; regulated under Cosmetic Products Act, aligns with IFRA. | MFDS - Ministry of Food and Drug Safety |
| ASEAN | - | ASEAN Cosmetic Directive references IFRA; no explicit limit for DEP. | - |
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