Nadic anhydrous , 99% , 826-62-0

Synonym(s):
5-Norbornene-2,3-dicarboxylic anhydride

CAS NO.：826-62-0

Empirical Formula: C9H8O3

Molecular Weight: 164.16

MDL number: MFCD00069013

EINECS: 212-557-9

PRODUCT Properties

• Melting point: 165-167 °C(lit.)
• Boiling point: 251.61°C (rough estimate)
• Density: 1.2132 (rough estimate)
• refractive index: 1.5260 (estimate)
• storage temp.: Inert atmosphere,Room Temperature
• solubility: diethyl ether: soluble0.1g/10 mL, clear, colorless
• form: powder to crystal
• color: White to Almost white
• Specific Gravity: 1.250 (20/4℃)
• Merck: 14,1796
• BRN: 150228
• InChI: InChI=1S/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2
• InChIKey: KNDQHSIWLOJIGP-UHFFFAOYSA-N
• SMILES: C1(=O)C2C(C3CC2C=C3)C(=O)O1
• LogP: -0.040 (est)
• CAS DataBase Reference: 826-62-0(CAS DataBase Reference)
• EPA Substance Registry System: 4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro- (826-62-0)

Description and Uses

The substance 5-norbornene-2,3-dicarboxylic anhydride has a purity of approximately 99.5 % and consists of two isomers, cis-5-norbrene-endo-2,3-dicarboxylic anhydride (99.2 %) and cis-5-norbreneexo-2,3-dicarboxylic anhydride (0.3 %). It has an estimated log Po/w = 2.3. Due to its chemical nature as an anhydride it readily hydrolyses into the free diacid, norbornene-2,3-dicarboxylic acid. Therefore, migration into aqueous foodstuffs will also lead to the presence of the two isomeric diacids. Melting point of the substance is 163-165 °C.

5-Norbornene-2,3-dicarboxylic anhydride, as a copolymer monomer in polyester can coatings up to 18.3 % w/w in the final dry coating, does not pose a safety concern to the consumer under sterilised conditions and prolonged contact with all foodstuffs (except beverages).

Safety

• Symbol(GHS): GHS05,GHS08
• Signal word: Danger
• Hazard statements: H317-H318-H334
• Precautionary statements: P261-P280-P305+P351+P338-P342+P311
• Hazard Codes: Xn
• Risk Statements: 41-42/43
• Safety Statements: 22-24-26-37/39
• RIDADR: UN 1325
• WGK Germany: 3
• RTECS: DT5600000
• F: 21
• HS Code: 38220090
• Toxicity: skn-rbt 500 mg/24H MLD 28ZPAK -,140,72