DIISONONYL PHTHALATE

PRODUCT IDENTIFICATION
CAS NO.

28553-12-0

DINP

EINECS NO. 271-090-9
FORMULA C6H4(COOC9H19)2
MOL WT.

418.61
H.S. CODE 2917.33.0050

TOXICITY

  
SYNONYMS DINP; Isononyl alcohol phthalate; DINP; Palatinol DN; Palatinol N;
1,2-Benzenedicarboxylic acid diisononyl ester; Bis(7-methyloctyl) phthalate;  Di(C8-C10) branched alkyl phthalate; Di(isononyl) phthalate branched; Di(C8-10, C9 rich) branched alkyl phthalates; Vestinol 9; Vestinol NN; Vinylcizer 90; Witamol 150; Other RN: 68515-48-0; 105009-97-0; 41375-91-1; 58033-90-2
SMILES c1(c(C(OCC[C@@H](CC(C)(C)C)C)=O)cccc1)C(OCC[C@@H](CC (C)(C)C)C)=O

CLASSIFICATION

Dielectric (electric insulating) fluid, Plasticizer, Polymer Additive

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

clear viscous liquid
MELTING POINT  
BOILING POINT 279  - 287 C
SPECIFIC GRAVITY 0.972
SOLUBILITY IN WATER

Insoluble(0.2 mg/l at 20 C)

SOLVENT SOLUBILITY

 
pH

 
VAPOR DENSITY  
log Pow 9.37 (Octanol-water)
HENRY'S LAW 1.49E-06 (atm-m3/mole at 25 C)
OH RATE 2.34E-11 (cm3/molecule-sec at 25 C Atmospheric)

AUTOIGNITION

405 C
NFPA RATINGS Health: 1 Flammability: 1 Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT 93 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.

Plasticizer

CAS #

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

 

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

C6H4(COOC9H19)2

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

C6H4(COOC10H21)2

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

DINP is a general ,next to DOP,plasticizer. Heat resistance, low temperature resistance and volatility resistace are properties are usd to PVC.

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Material Safety Data Sheet

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http://www.cpsc.gov/
DINP IDENTITY: Before addressing the toxicological data, it is important to discuss the identity of the chemical substance for which those data have been generated. In its data call-in notice for DINP and four other chemicals/chemical groups, OEHHA provided no CAS number for DINP. OEHHA and CIC consideration of DINP should be specific with reference to CAS Registry numbers (CASRNs) 68515-48-0 and 28553-12-0, which designate DINP as commercially produced and distributed.
Unlike most lower molecular weight phthalates, DINP is not composed of a single molecule. Rather, it is produced by reaction of a phthalate moiety with alcohols. The majority of these alcohols have nine carbons (C9), but in various isomeric configurations. In addition, the alcohol fraction includes C8 and C10 alcohols. Since each phthalate has two hydrocarbon ˇ°armsˇ±, some molecules within commercial DINP have one arm that is C9, the other C8 or C10, and so forth. Thus, commercial DINP is not simply phthalate molecules with two C9 arms, but a complex substance consisting of C8-, C9- and C10-containing molecules. C9/C9 molecules predominant, but are not the only species.

www.regulations.gov/
DINPs constitute a family of di-ester phthalates widely used as plasticizers. They are colorless, oily liquids with high boiling points, low volatility, and low water solubility (i.e., less than one :g/L). Multiple CAS Registry Numbers are associated with DINP: 28553-12-0, 71549-78-5, 14103-61-8 and 68515-48-0. However, there is no single generic CAS Registry Numbers that represents all DINPs. The chemicals represented by CAS Registry Number 28553-12-0 and 71549-78-5 consist of mixtures of DINP isomers (compounds which have the same molecular formula but differ in the arrangement of their atoms). CAS registry number 14103-61-8 represents a single isomeric structure of DINP. The molecular formulas of these nine-carbon alkyl ester moieties are the same for these DINP isomers. However, they differ in structure as a result of the specific branching within the alkyl ester moieties. The material represented by CAS Registry Number 68515-48-0 is also considered a DINP. It differs from the materials represented by the other three CAS Registry Numbers in that it consists of di-ester phthalates with nine-carbon alkyl ester moieties (approximately 70% by weight) mixed with lesser amounts of di-ester phthalates with eight- and ten-carbon alkyl ester moieties. Some DINP products are further identified as DINP1, DINP2, or DINP3 based upon the manufacturing process used in their production. Depending on the manufacturing process used, the quantitative ratio of isomers which make up the final DINP product will vary. DINP1 is identified by CAS Registry Number 68515-48-0. DINP2 and DINP3 are identified by the same CAS Registry Number, 28553-12-0. Additional information on the various names used to identify DINP by CAS Registry Number and the composition of various products can be found in Chapter Two, Chemistry and Fate Assessment.
SALES SPECIFICATION

APPEARANCE

clear liquid

ESTER CONTENT

99.6% min

SPECIFIC GRAVITY

0.972 ± 0.002

COLOR, APHA 25 max

REFRACTIVE INDEX

1.484 ± 0.003

WATER 0.05% max
TRANSPORTATION
PACKING

195 kg in drum
HAZARD CLASS

Not regulated
UN NO.  
SAFETY INFORMATION
Hazard Symbols: XI, Risk Phrases: 62-63, Safety Phrases: 23-36/37



PRICE INFORMATION