Product Name

  • Name

    Himic anhydride

  • EINECS 212-557-9
  • CAS No. 826-62-0
  • Article Data43
  • CAS DataBase
  • Density 1.406 g/cm3
  • Solubility DECOMPOSES
  • Melting Point 158-164 °C
  • Formula C9H8O3
  • Boiling Point 331.056 °C at 760 mmHg
  • Molecular Weight 164.161
  • Flash Point 163.801 °C
  • Transport Information UN 1325
  • Appearance White solid.
  • Safety 22-24-26-37/39
  • Risk Codes 41-42/43
  • Molecular Structure Molecular Structure of 826-62-0 (Himic anhydride)
  • Hazard Symbols HarmfulXn
  • Synonyms 5-Norbornene-2,3-dicarboxylicanhydride (6CI,8CI);2-Norbornene-5,6-dicarboxylic anhydride;3,6-Endomethylenetetrahydrophthalic anhydride;3,6-Methylene-1,2,3,6-tetrahydrophthalic anhydride;4-Oxatricyclo[5.2.1.02,6]dec-8-ene-3,5-dione;5-Norbornene-2,3-dicarboxylicacid anhydride;Bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride;HIMIC;NSC 3999;cis-3,6-Endomethylene-1,2,3,6-tetrahydrophthalic anhydride;3,6-Endomethylene-1,2,3,6-tetrabydro-cis-phthalic Anhydride;3,6-Endomethylene-δ4-tetrahydrophthalic anhydride;3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione;3aa,4,7,7aa-Tetrahydro-4a,7a-methanoisobenzofuran-1,3-dione;4-Oxatricyclo[5.2.1.02,6]dec-8-en-3,5-dion;
  • PSA 43.37000
  • LogP 0.50810

Himic anhydride Consensus Reports

Bicyclo(2.2.1)-hept-5-ene-2,3-dicarboxylic anhydride was reported in EPA TSCA Inventory.

Himic anhydride Safety Profile

4-Oxatricyclo[5.2.1.02,6]dec-8-en-3,5-dion

Himic anhydride Specification

The Nadic Anhydride, with the CAS registry number 826-62-0 and EINECS registry number 204-957-7, has the systematic of 3a,4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione. And the molecular formula of this chemical is C9H8O3. It belongs to the product category of Norbornene Derivatives.

The physical properties of Nadic Anhydride are as following: (1)# of Rule of 5 Violations: 0; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 20.96; (5)ACD/KOC (pH 7.4): 20.96; (6)#H bond acceptors: 3; (7)#H bond donors: 0; (8)#Freely Rotating Bonds: 0; (9)Polar Surface Area: 43.37 Å2; (10)Index of Refraction: 1.584; (11)Molar Refractivity: 39.08 cm3; (12)Molar Volume: 116.78 cm3; (13)Polarizability: 15.493×10-24cm3; (14)Surface Tension: 50.991 dyne/cm; (15)Density: 1.406 g/cm3; (16)Flash Point: 163.801 °C; (17)Enthalpy of Vaporization: 57.369 kJ/mol; (18)Boiling Point: 331.056 °C at 760 mmHg; (19)Vapour Pressure: 0 mmHg at 25°C.

Uses of Nadic Anhydride: It can react with ethanol to produce (+-)-norborn-5-ene-2endo,3endo-dicarboxylic acid monoethyl ester. The reaction time is 3 hours with heating, and the yield is about 83%.

Nadic Anhydride can react with ethanol to produce (+-)-norborn-5-ene-2endo,3endo-dicarboxylic acid monoethyl ester

You should be cautious while dealing with this chemical. It has risk of serious damage to eyes, and may cause sensitization by inhalation and skin contact. Therefore, you had better take the following instructions: Wear suitable gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; Do not breathe dust; Avoid contact with skin.

You can still convert the following datas into molecular structure:
(1)SMILES: C1C2C=CC1C3C2C(=O)OC3=O
(2)InChI: InChI=1/C9H8O3/c10-8-6-4-1-2-5(3-4)7(6)9(11)12-8/h1-2,4-7H,3H2
(3)InChIKey: KNDQHSIWLOJIGP-UHFFFAOYAJ

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