CAS No.11070-44-3,Tetrahydromethyl-1,3-isobenzofurandione Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	11070-44-3
Name:	Tetrahydromethyl-1,3-isobenzofurandione

Formula:	C₉H₁₀O₃
Molecular Weight:	166.18
Synonyms:	1,3-Isobenzofurandione, tetrahydromethyl-;Methyl Tetrahydro Phthalic Anhydride;Methyltetrahydrophthalic anhydride;Tetrahydromethylphthalic anhydride;MTHPA;
EINECS:	234-290-7
Density:	1.23 g/cm³
Boiling Point:	306.7 °C at 760 mmHg
Flash Point:	145.3 °C
Solubility:	Soluble in water
Hazard Symbols:	Xn
Risk Codes:	36/37/38
Safety:	26-36/37/39
PSA:	43.37000
LogP:	0.89820

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Specification

The Tetrahydromethyl-1,3-isobenzofurandione is light yellow transparent liquid with the formula C₉H₁₀O₃. The IUPAC name of this product is 3a-methyl-5,6-dihydro-4H-2-benzofuran-1,3-dione. With the CAS registry number 11070-44-3, it is also named as Tetrahydromethylphthalic anhydride. It has other registry number 74318-12-0.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 1.00; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1; (4)ACD/LogD (pH 7.4): 1; (5)ACD/BCF (pH 5.5): 3.38; (6)ACD/BCF (pH 7.4): 3.38; (7)ACD/KOC (pH 5.5): 83.15; (8)ACD/KOC (pH 7.4): 83.15; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Index of Refraction: 1.527; (13)Molar Refractivity: 41.29 cm³; (14)Molar Volume: 134.1 cm³; (15)Polarizability: 16.36×10^-24 cm³; (16)Surface Tension: 42.3 dyne/cm; (17)Enthalpy of Vaporization: 54.72 kJ/mol; (18)Vapour Pressure: 0.00076 mmHg at 25°C; (19)Exact Mass: 166.062994; (20)MonoIsotopic Mass: 166.062994; (21)Topological Polar Surface Area: 43.4; (22)Heavy Atom Count: 12.

The Tetrahydromethyl-1,3-isobenzofurandione can be used as epoxy curing agent, solvent-free paints, laminates, epoxy adhesives, etc. When it is used as epoxy curing agent, it has many excellent performance of long-term storage at room temperature, low freezing point, volatile small and low toxicity. This product is also widely used in motors, dry transformers, high voltage switch, transformer, line output transformer, appliance capacitors, power capacitors resistors, integrated circuits dipping, pouring and wrapping, etc.

This chemical is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure.
1.SMILES: O=C1OC(=O)/C2=C/CCCC12C;
2.InChI: InChI=1/C9H10O3/c1-9-5-3-2-4-6(9)7(10)12-8(9)11/h4H,2-3,5H2,1H3.