CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE

CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE - Names and Identifiers

Name	(1α,2α,3β,6β)-1,2,3,6-tetrahydro-3,6-methanophthalic anhydride
Synonyms	NSC 110659 exo-5-Norbornene-2,3-dicarboxylic anhydride CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE cis-5-Norbornene-exo-2,3-dicarboxylic anhydride Exo-cis-5-Norbornene-2,3-dicarboxylic anhydride 5-Norbornene-2,3-dicarboxylic anhydride, cis-exo- exo-3,6-Methylene-1,2,3,6-tetrahydrophthalic anhydride Bicyclo[2.2.1]Hept-5-Ene-Exo-2,3-Dicarboxylic Anhydride BICYCLO[2.2.1]HEPT-5-ENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE 4,7-Methanoisobenzofuran-1,3-dione,3a,4,7,7a-tetrahydro-, (3 (1α,2α,3β,6β)-1,2,3,6-tetrahydro-3,6-methanophthalic anhydride (3aR,7aS)-3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione (3aR,7aS)-3a,4,7,7a-tetrahydro-4,7-Methanoisobenzofuran-1,3-dione (1α,2α,3β,6{f1b})-1,2,3,6-tetrahydro-3,6-methanophthalicanhydride (2-exo,3-exo)-Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid anhydride (1alpha,2alpha,3beta,6beta)-1,2,3,6-Tetrahydro-3,6-methanophthalicanhydride 4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3aR,4R,7S,7aS)-rel- (2-exo,3-exo)-Norborn-5-ene-2,3-dicarboxylic acid anhydride, exo-cis-Himic anhydride 4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, (3aalpha,4beta,7beta,7aalpha)-
CAS	2746-19-2
EINECS	220-384-5
InChI	InChI=1/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2/t4?,5?,6-,7+
InChIKey	KNDQHSIWLOJIGP-RNGGSSJXSA-N

CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE - Physico-chemical Properties

Molecular Formula	C9H8O3
Molar Mass	164.16
Density	1.405±0.06 g/cm3(Predicted)
Melting Point	140-145°C(lit.)
Boling Point	331.1±42.0 °C(Predicted)
Flash Point	163.8°C
Solubility	Chloroform
Vapor Presure	0.00016mmHg at 25°C
Appearance	White white crystalline powder
Color	White to Off-White
Storage Condition	Inert atmosphere,2-8°C
Refractive Index	1.583
MDL	MFCD00630580

CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE - Risk and Safety

Risk Codes	R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R42/43 - May cause sensitization by inhalation and skin contact.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S24 - Avoid contact with skin. S22 - Do not breathe dust.
WGK Germany	3
TSCA	Yes
HS Code	29189900

CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE - Reference Information

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
Use	Cis-5-norbornene-outer -2, 3-dicarboxylic anhydride is also called exomethylene tetrahydrophthalic anhydride. Methylene tetrahydrophthalic anhydride is divided into inner and outer configurations, namely inner methylene tetrahydrophthalic anhydride and outer methylene tetrahydrophthalic anhydride. The two configurations have different Uses. Exomethylene tetrahydrophthalic anhydride is an important chemical raw material, which is widely used in electronics, synthetic resins, petroleum industry, pesticides and other fields.
preparation	weigh 98g of maleic anhydride and 26g of dicyclopentadiene, place them in a reaction kettle, add 100mL of dichloromethane, seal, stir, and raise the temperature to 150 ℃. after the reaction is complete, the obtained reaction solution is cooled, crystallizated, separated and dried to obtain shun -5-norbornene-outer -2,3-dicarboxylic acid anhydride crude product 47.5g (yield 72.35%). Take 500g of crude product (chromatographic purity 68.12%), add 500ml of propanol, heat to 85±5 ℃, reflux until dissolved completely, stir, cool to room temperature, cool to -25±5 ℃ for 5-6h, filter, and collect crystals; Add 250ml of propanol to the above crystals, heat to 85±5 ℃, reflux until dissolved completely, stir, cool to room temperature, it is placed at -5±5 ℃ for cooling and crystallization for 2h ~ 3h, filtration, crystal collection and drying to obtain 335.52g of cis-5-norbornene-outer -2, 3-dicarboxylic acid anhydride, melting point: 142.0 ℃ ~ 142.5 ℃, yield 98.51% and purity 99.91%.

Last Update：2024-04-09 21:54:55

CIS-5-NORBORNENE-EXO-2,3-DICARBOXYLIC ANHYDRIDE

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