顺式1,2-环己烷二甲酸酐

Description

cis-1,2-Cyclohexanedicarboxylic anhydride · CAS 85-42-7 · C8H10O3. Boiling Point: BP: 145 °C at 18 mm Hg; Boiling Point: 296 °C; Boiling Point: 564.8 °F.

Identification

CAS Registry Number	85-42-7
PubChem CID	85689
Molecular formula	C8H10O3
IUPAC name	3a,4,5,6,7,7a-hexahydro-2-benzofuran-1,3-dione

Computed Descriptors

Molecular Weight	154.16
XLogP3	1.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	154.062994177
Monoisotopic Mass	154.062994177
Topological Polar Surface Area	43.4
Heavy Atom Count	11
Formal Charge	0

Physical & Chemical Properties

Boiling Point	BP: 145 °C at 18 mm Hg
Boiling Point	296 °C
Boiling Point	564.8 °F
Melting Point	32 °C
Melting Point	35-36 °C
Melting Point	89.6 °F
Flash Point	149 °C (open cup)
Flash Point	300.2 °F
Density	1.19 at 40 °C
Density	5.3

Physical description & handling notes

• Dry Powder; Other Solid; Large Crystals; Liquid
• Solid; [ICSC] Glassy solid; [EPA ChAMP] White solid; [Alfa Aesar MSDS]
• SOLID IN VARIOUS FORMS.
• Dry powder or solid in various forms, or clear, colorless, viscous liquid.
• Clear, colorless, viscous liquid
• ... becomes a glassy solid at 35-36 °C

Regulatory Status

GHS notification summary	0.2% (1 / 526)

GHS Hazard Classification

GHS notification summary	0.2% (1 / 526)
Reported hazard statements	H317, H318, H334, H335, H336

Documented Uses

• Used as a curing agent for epoxy resins and an intermediate for plasticizers and other chemicals; [Hawley] Used in the chemical, polymers, and paints, lacquers, and varnishes industries; [IUCLID]
• Plastic Composites Manufacturing [Category: Industry]
• Intermediate for alkyds, plasticizers, insect repellents, and rust inhibitors; hardener in epoxy resins.
• Not Known or Reasonably Ascertainable
• Tetrahydrophthalic anhydride is formed by a Diels - Alder reaction with butadiene; hydrogenation of the anhydride yields hexahydrophthalic anhydride.
• 2023: 10,000,000 - <50,000,000 lb

Synonyms

Hexahydrophthalic anhydride; 85-42-7; 1,2-Cyclohexanedicarboxylic anhydride; HHPA; Lekutherm Hardener H; 1,3-Isobenzofurandione, hexahydro-; Araldite HT 907; Hexahydrophthalic acid anhydride; Cyclohexane-1,2-dicarboxylic anhydride; 1,2-Cyclohexanedicarboxylic acid anhydride; hexahydro-1,3-isobenzofurandione; Hexahydro-2-benzofuran-1,3-dione; DTXSID8026515; CHEBI:103210; DTXCID906515; RefChem:146059

Frequently Asked Questions

What are the CAS number and molecular formula of cis-1,2-Cyclohexanedicarboxylic anhydride?

CAS 85-42-7; molecular formula C8H10O3; molecular weight — g/mol.

What other names is cis-1,2-Cyclohexanedicarboxylic anhydride known by?

Hexahydrophthalic anhydride, 85-42-7, 1,2-Cyclohexanedicarboxylic anhydride, HHPA, Lekutherm Hardener H, 1,3-Isobenzofurandione, hexahydro-.

Is cis-1,2-Cyclohexanedicarboxylic anhydride classified as hazardous?

0.2% of GHS notifications report no hazard classification (1 of 526).

What are the key physical properties of cis-1,2-Cyclohexanedicarboxylic anhydride?

Boiling Point: BP: 145 °C at 18 mm Hg; Boiling Point: 296 °C; Boiling Point: 564.8 °F; Melting Point: 32 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.