DIOCTYL PHTHALATE

PRODUCT IDENTIFICATION
CAS NO 117-81-7

DIOCTYL PHTHALATE
EINECS NO. 204-211-0
FORMULA C6H4(COOC8H17)2
MOL WT.

390.56
H.S. CODE 2917.34

TOXICITY

 Oral rat LD50: 30 gm/kg
SYNONYMS Di-sec-octyl phthalate; DOP;
Bis(2-Etheylexyl) Phthalate; Bis(2-Ethylhexyl) Phthalate; Benzenedicarboxylic acid, bis(2-ethylhexyl) ester; 1,2-Benzenedicarboxylic acid bis(2-ethylhexyl) ester; Octoil; Ethyl hexyl phthalate; 2-Ethylhexyl phthalate; Di-sec-octyl phthalate; DEHP; Octyl phthalate; phthalic acid dioctyl ester; BEHP;
DERIVATION  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

clear liquid, slight odor
MELTING POINT -50 C
BOILING POINT

384 C
SPECIFIC GRAVITY

0.986
SOLUBILITY IN WATER Insoluble

SOLVENT SOLUBILITY

 
pH

 
VAPOR DENSITY 13.5
HENRY'S LAW

 
NFPA RATINGS Health: 1; Flammability: 1; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT 109 C
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION AND APPLICATIONS
Phthalates are by far the most widely used plasticisers, primarily to make soft and flexible polyvinyl chloride (PVC) for the applications in the industry of automotive, building & construction material, cable, flooring, medical device and toys. Phthalates make the long polyvinyl molecules to slide against one another. Minor quantity of phthalates are used in adhesives, caulk, sealants, paint to improve work performance. Small molecule phthalates are used as solvents in perfumes to provide longer linger longer and in nail polish to prevent chipping. They are also used as ingredients of insect repellents, as solvents in lacquer and pesticides, and as dye carrier. They are used as textile lubricating agents and as solid rocket propellents. Phthalates are produced by the reaction of phthalic anhydride with appropriate alcohols from methanol up to isodecanol (C13), either as a straight chain or with some branched in the presence of concentrated sulphuric acid as a catalyst. Excess alcohols are recovered and recycled and phthalates are purified by vacuum distillation and/or activated charcoal. A wide range of phthalates of varying chain length and structure provides each adequate properties and cost-effective for various processing and mechanical requirements. C8 - C9 phthalates, such as di-2-ethyl hexyl phthalate (DEHP or called DOP), diisodecyl phthalate (DIDP) and diisononyl phthalate (DINP) are the most widely used general purpose phthalates. DOP is the dominant plasticizer used in PVC, providing low cost. Short chain phthalates (C3 - C7) are used when rapid setting and stain resistance is required. 2-Ethyl hexanol, produced by the dimerisation of butyraldehyde obtained from propylene, is cheaper than isononyl alcohol which are prepared by the carbonylation of an olefin. Long chain phthalates (C11 - C13) are used when high temperature stability is required. C1 and C2 phthalates are used as solvents. Special phthalates which contain aromatic ring in the side chain are used when fast-fused is required. Diallyl phthalate is used as a crosslinking agent, plasticizer or dying carrier for polyesters. Examples of common phthalates include:

Plasticizer

CAS #

FORMULA & Mol weight
Dimethyl phthalate (DMP)131-11-3C6H4(COOCH3)2
194.19
Diethyl phthalate (DEP)84-66-2C6H4(COOC2H5)2
222.24
Diallyl Phthalate (DAP)131-17-9C6H4(COOCH2CH=CH2)2
246.26
Di-n-propyl phthalate (DPP)131-16-8C6H4(COOCH2CH2CH3)2
250.29
Di-n-butyl phthalate (DBP)84-74-2C6H4[COO(CH2)3CH3]2
278.35
Diisobutyl phthalate (DIBP)84-69-5C6H4[COOCH2CH(CH3)2]2
278.35
Butyl cyclohexyl phthalate (BCP) 84-64-0CH3(CH2)3OOCC6H4COOC6H11
304.39
Di-n-pentyl phthalate (DNPP)131-18-0C6H4[COO(CH2)4CH3]2
306.40
Dicyclohexyl Phthalate (DCP)84-61-7C6H4(COOC6H11)2
330.42
Butylbenzyl phthalate (BBP)85-68-7CH3(CH2)3OOCC6H4COOCH2C6H5
312.36
Di-n--hexyl phthalate (DNHP) 84-75-3 C6H4[COO(CH2)5CH3]2
334.45
Diisohexyl phthalate (DIHxP) 146-50-9 C6H4[COOCH2CH(CH3)4]2
334.45
Diisoheptyl phthalate (DIHpP)41451-28-9C6H4[COOCH2CH(CH3)5]2
362.51
Butyl decyl phthalate (BDP) 89-19-0 CH3(CH2)3OOCC6H4COO(CH2)9CH3
362.51
mixture of C7 - C11 alkyl esters 39393-37-8

 

Di-(2-ethylhexyl) phthalate (DEHP or DOP)117-81-7C6H4[COOCH2CH(C2H5)(CH2)3CH3]2
390.56
Di(n-octyl) Phthalate (DNOP)117-84-0C6H4[COO(CH2)7CH3]2
390.56
Diisooctyl phthalate (DIOP)27554-26-3C6H4[COOCH2CH(CH3)6]2
390.56
mixture of C8 - C10 branched alkyl esters (C9 rich)68515-48-0

C6H4(COOC9H19)2
418.62

n-Octyl n-decyl phthalate (ODP)119-07-3CH3(CH2)7OOCC6H4COO(CH2)9CH3
418.62
Diisononyl phthalate (DINP)28553-12-0C6H4(COOCH2CH(CH3)7)2
418.62
Diisodecyl phthalate (DIDP)26761-40-0C6H4(COOCH2CH(CH3)9)2
446.67
mixture of C9 - C11 branched alkyl esters (C10 rich) 68515-49-1

C6H4(COOC10H21)2
446.67

Diundecyl phthalate (DUP)3648-20-2C6H4[COO(CH2)10CH3]2
474.72
Diisoundecyl phthalate (DIUP) 85507-79-5 C6H4[COOCH2CH(CH2)9]2
474.72 
Ditridecyl phthalate (DTDP)119-06-2C6H4[COO(CH2)12CH3]2
530.83
Diisotridecyl phthalate (DITCP)68515-47-9 C6H4[COOCH2CH(CH2)11]2
530.83

DOP (Di-sec-Octylphthalate) is the most widely used general purpose plasticizer for the manufacture of flexible plastics (especially with PVC). It is insoluble in water and has a good stability to heat and ultraviolet light, a broad range of compatibility, and excellent resistance to hydrolysis. It is used in PVC, polyvinyl acetate, rubbers, cellulose plastics and polyurethane. End application include PVC floorings and wall coverings, expanded leather, PVC foams, films, sealing and adhesive systems based on polyurethane or polysulphide, PVAc based adhesives and paint binders.
SALES SPECIFICATION

APPEARANCE

clear liquid

ESTER CONTENT

99.6% min [GC]
REFRACTIVE INDEX

1.485 ± 0.003 at 20 C [ASTM D1045]
COLOR 30max , Pt/Co scale [ASTM D1045]

DENSITY

0.986 ± 0.003 g/cm3 [ASTM D1045]

WATER

0.05% max [ASTM D1364]

HEATING LOSS

0.1% max

VOLUME RESISTIVITY

2 x 10" ohm/cm [ASTM D1169]

TRANSPORTATION
PACKING

200kgs in drum, bulk
HAZARD CLASS

 
UN NO.  
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 40, Safety Phrases: 36/37-45