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Homophthalic anhydride

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Origin: China

Cas No: 703-59-3

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 703-59-3 Formula: C9H6O3 Molecular Weight: 162.14200

Basic Info

Chemical Name	Homophthalic anhydride
Synonyms	1H-2-Benzopyran-1,3(4H)-dione; 4H-isochromene-1,3-dione; Benzoglutaric anhydride;
CAS No.	703-59-3
Molecular Formula	C9H6O3
Molecular Weight	162.14200
PSA	43.37000
LogP	0.92610

Properties

Appearance & Physical State	beige solid.
Density	1.347 g/cm3
Boiling Point	324.5ºC at 760 mmHg
Melting Point	140-144ºC
Flash Point	159ºC
Refractive Index	1.584
Storage Condition	Refrigerator (+4ºC)

Safety Info

Safety Statements	S26-S37/39
HS Code	2932999099
WGK Germany	3
Risk Statements	R36/37/38
Hazard Codes	Xi
Symbol	GHS07
Hazard Declaration	H315; H319; H335
Signal Word	Warning
Caution Statement	P261; P305 + P351 + P338

Synthesis Route

methyl 2-(2-methoxy-2-oxoethyl)benzoate+trifluoroacetic acid→Homophthalic acid+2-(2-(methoxycarbonyl)phenyl)acetic acid
Homophthalic acid→Homophthalic anhydride
5,8-dimethoxy-1-hydroxy-3-methylisochroman→1-Hydroxy-5,8-dioxo-3-methyl-5,8-dihydroisochroman+Homophthalic anhydride

Precursor

2-Methoxymethylen-1-hydrindanon
phenylacetic acid
5,8-dimethoxy-1-hydroxy-3-methylisochroman
Ethyl chloroformate

Downstream Product

2-[2-(3-oxo-3-phenylpropanoyl)phenyl]acetic acid
4H-isoquinoline-1,3-dione
isoquinolin-1(2H)-one
1-oxo-2H-isoquinoline-4-carboxylic acid

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