diethyl phthalate(DEP) CAS 84-66-2 manufacturer China product image

DEP (diethyl phthalate)

Name: diethyl phthalate(DEP)
Brand: SKYSEVEN Chemical
SKU: 84-66-2

diethyl phthalate(DEP) (CAS 84-66-2) is an industrial chemical supplied by SKYSEVEN Chemical for global B2B buyers, molecular formula C12H14O4. Request a quote with purity, packing and destination port.

diethyl phthalate(DEP) (CAS 84-66-2) — industrial supply from SKYSEVEN Chemical (Shanghai). On your RFQ include CAS, assay/water limits, packing, quantity and Incoterm. COA and SDS are available on request; commercial reply target ≤24 hours CST.

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CAS

Purity

Product Description

CHARACTER

diethyl phthalate (DEP), chemical formula C12H14O4, is a colorless to slightly yellow transparent oily liquid with aromatic odor, commonly used as an organic solvent and plasticizer. DEP has good solubility and volatility, can be miscible with a variety of organic solvents, is an important raw material for the manufacture of coatings, inks, resins and adhesives. As a plasticizer, DEP can improve the flexibility, cold resistance and processing performance of plastics, and is widely used in the production of polyvinyl chloride (PVC) products. In addition, DEP is also used in the manufacture of fragrances, dye intermediates and as a solvent in the laboratory. As a multifunctional organic compound, diethyl phthalate is widely used in chemical, plastic, ink and other industries.

APPLICATIONS

(1) Diethyl phthalate can be used as a plasticizer, especially for plastics and cellulose resins, to improve their flexibility and processability. It is mainly with cellulose acetate, polymethyl methacrylate, polystyrene and other resins have good compatibility, is an important modifier of these materials.

(2) The compound can also be used as a solvent and lubricant. In the manufacture of cosmetics and perfumes, it can be used as a solvent and fixative for fragrances, which can enhance the durability and stability of fragrances. It is also used in the manufacture of detergents and spray insecticides.

(3) Diethyl phthalate as a frother in the flotation of non-ferrous metal mines can improve the flotation efficiency. It is also a stationary liquid for gas chromatography and is used for chemical analysis.

(4) In addition, it can also be used as an alcohol denaturing agent to prevent alcohol from being illegally used as drinking alcohol. In the manufacture of adhesives, diethyl phthalate can improve the adhesion of polyvinyl acetate and enhance the performance of adhesives.

(5) In pharmaceutical manufacturing, diethyl phthalate is also used as a solvent and lubricant to help better mix and shape pharmaceutical ingredients. At the same time, it is also used as a stabilizer for rocket propellants to ensure the stable operation of rocket propulsion systems.

ABILITIES

1. Packing: barreled, scattered water
2. Logistics: car transportation, shipping
3. Payment request: EXW/FOB/FCA/CFR only accepted

HONORARY

CAS Number	84-66-2
Molecular Formula	C12H14O4
Molecular Weight	222.237
Boiling Point	298-299℃
Density	1.118
Flash Point	156℃
Refractive Index	1.501-1.503
Vapor Pressure	1mmHg(100°C)
Catalog packing	0 / 78 / 79 / 80 / 81

Key facts for buyers (2026-07)

diethyl phthalate(DEP) (CAS 84-66-2, formula C12H14O4) is traded as an industrial chemical feedstock/solvent. B2B buyers in 2026 typically lock identity by CAS, request lot COA + SDS before PO, and specify packing (drum/IBC/ISO tank) plus Incoterm on the RFQ. SKYSEVEN Chemical (Shanghai) targets commercial replies within 24 hours (CST, UTC+8). Cross-check identity data in PubChem / NIST / CAS Common Chemistry before first import.

Sources & references:

Buyer checklist

Write full chemical name + CAS 84-66-2 on every RFQ and PO.
State purity/assay, critical impurities, packing and monthly quantity.
Choose Incoterm (EXW/FOB/CIF) with your freight forwarder before comparing quotes.
Request COA + SDS (language) before first shipment; archive with the PO.
Confirm lead time in writing; SKYSEVEN Chemical works on Shanghai time (CST).
Common packing options on catalog: 0,78,79,80,81. Confirm available packing and MOQ on the RFQ.

Next step: Request a quote for CAS 84-66-2 · RFQ template · WhatsApp +86-191-1728-8062

Sourcing pattern (example)

Example sourcing pattern: a coatings or intermediate manufacturer confirms diethyl phthalate(DEP) by CAS 84-66-2, requests assay/water limits on RFQ, compares FOB vs CIF landed cost, and releases payment only after draft COA/SDS review. Replace this pattern with a customer-approved case study when available.

Trust & fulfilment

diethyl phthalate(DEP) inquiries should include CAS identity for document alignment.
Industrial grades are standard; tighter specs require written limits on the RFQ.
Export documents (COA/SDS) available on request for orders.
Packing and Incoterms confirmed before order finalization.
Technical questions handled by SKYSEVEN Chemical specialist roles (see Authors).

Last reviewed: 2024-12-03 · By SKYSEVEN Chemical Technical Team · Authors · Trust center · Research · Compliance

Applications of diethyl phthalate(DEP)

Polymer synthesis and modification
Adhesives, sealants and elastomer systems
Engineering plastics and composite intermediates

How to buy diethyl phthalate(DEP) from SKYSEVEN Chemical

Confirm product identity: chemical name, CAS number, purity and required packing.
Submit an inquiry on cnchemshop.com with destination country, quantity and Incoterm preference.
Review quotation, lead time, and document list (COA, SDS, origin certificate if needed).
Confirm order terms (T/T or L/C), packing and shipping mode (sea/air as applicable).
Receive shipment documents and track delivery to your port or warehouse.

Reference data sources

FAQ — diethyl phthalate(DEP)

What is diethyl phthalate(DEP)?

diethyl phthalate(DEP) (CAS 84-66-2) has molecular formula C12H14O4. SKYSEVEN Chemical supplies industrial grades for B2B export; specifications are confirmed on COA.

What is the CAS number of diethyl phthalate(DEP)?

The CAS Registry Number of diethyl phthalate(DEP) is 84-66-2. Verify with free CAS lookup: cnchemshop.com/tools/cas-lookup.html or /cas/84-66-2.html.

How to buy diethyl phthalate(DEP) from China?

Request a quote on cnchemshop.com for diethyl phthalate(DEP) (CAS 84-66-2). State purity, packing, quantity and destination port. SKYSEVEN Chemical provides COA/SDS and aims to reply within 24 hours (CST, UTC+8).

What are the key physical properties of diethyl phthalate(DEP)?

Key properties of diethyl phthalate(DEP) include boiling point 298-299℃, density 1.118. Always verify against the latest COA and SDS for your lot.

Chinese name	diethyl phthalate
English Name	Diethyl phthalate
Alias	Diethylphthalate Diethylphthalate phthalic acid diethyl terephthalic acid diethyl ester phthalic acid diethyl ester of terephthalic acid L **diethyl phthalic acid diethyl ester of 1,2-phthalic acid diethyl ester of phthalic acid diethyl ester-GCS of n-hexane diethyl phthalate
English alias	DEP Anozol Diethyl ester Ethyl phthalate DIETHYLPHTALATE Diethyl phthalate 1,2-diethyl phthalate Phthalic Acid Diethyl Ester diethyl1,2-benzenedicarboxylate Diethyl-1,2-benzenedicarboxylate 1,2-benzenedioicacid,diethylester diethyl benzene-1,2-dicarboxylate -Benzenedicarboxylic acid diethyl ester Benzene-1,2-dicarboxylic acid diethyl ester Diethyl ester of 1,2-Benzenedicarboxylic acid Diethyl phthalate, (Phthalic acid diethyl ester)
CAS	84-66-2
EINECS	201-550-6
Chemical formula	C12H14O4
molecular weight	222.24
InChI	InChI:1S/C12H14O4/c1-3-15-11(13)9-7-5-6-8-10(9)12(14)16-4-2/h5-8H,3-4H2,1-2H3
Density	1.12 g/mL at 25°C (lit.)
melting point	-3°C (lit.)
boiling point	298-299°C (lit.)
Flash Point	>230°F
water solubility	1 g/L (20 °C)
Vapor pressure	1mm Hg ( 100 °C)
steam density	7.66 (vs air)
solubility	Virtually insoluble in water and miscible with ethanol (96%).
refractive index	n20/D 1.502(lit.)
Storage conditions	2-8°C
Stability	stability. Combustible. Incompatible with strong oxidants, strong acids and strong bases.
Sensitivity	Easily absorbing moisture
Appearance	Solid
Specific Gravity	1.118
Color	APHA: ≤15
Merck	14,7371
BRN	1912500
explosion limit value	0.75%, 187°F
Exposure Limits	TLV-TWA air 5 mg/m3 (ACGIH)..
physicochemical properties	colorless transparent oily liquid, slightly aromatic. With ethanol, ether miscible, soluble in acetone, benzene and other organic solvents, insoluble in water.
MDL No.	MFCD00009111
Security terminology	24/25-Avoid skin and eye contact.
Dangerous Goods Transport Number	UN 3082 9 / PGIII
WGK Germany	2
RTECS	TI1050000
TSCA	Yes
Customs Number	29173400
Upstream raw materials	phthalic anhydride ethanol
Downstream Products	Fluorescamine Sullinic Acid Phenylleulalonic Acid Diethyl Ester 4-(4-Pyridylmethyl)-1(2H)-Phthalazinone Pyrocarbinol Dibenzyl Phthalate

Diethyl Phthalate -Introduction

cellulose nitrate, cellulose acetate solvent. Plasticizers. Wetting agent. Gas chromatography stationary liquid (the highest temperature is 95 ℃, the solvent is acetone, benzene, dichloromethane, ethanol), selective retention and separation of aromatic compounds, unsaturated compounds and various oxygen-containing compounds (alcohols, aldehydes, ketones, esters, etc.).

Last Update: 2022-10-16 17:29:17

Diethyl Phthalate -Introduction

Diethyl phthalate (DEP) is a colorless liquid with low volatility and faint aroma. The following is a description of the nature, use, preparation and safety information of DEP: Properties:

-It is a relatively stable compound, with many organic reactions.

Uses:
-DEP is widely used as a solvent, plasticizer and stabilizer.
-It is also used in plastic products, glue, ink, lubricant and other industrial fields.

preparation method:
-DEP- DEP is usually prepared by o-nitrobenzene and ethanol reaction to generate o-nitrobenzene ethanol, and then through the reduction reaction to obtain DEP.

safety information:
- DEP at room temperature on human health non-toxic, but long-term exposure may be on the reproductive system harm.
-It is a flammable liquid and needs to be kept away from open flames and high temperatures. -Storage should avoid with oxidants and strong acid contact, should be stored in a cool, ventilated place, away from fire.

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