PHTHALIC ACID - (88-99-3)

Introduction

Name: phthalic acid; benzene-1,2-dicarboxylic acid
* IUPAC
CAS Number: 88-99-3
Chemical Formula: C8H6O4 or C6H4(COOH)2
Molar Mass: 166.13084 g
Mass Percent: C 57.837 %; H 3.6402 %; O 38.522 % 
Isomers:  terephthalic acid  •  isophthalic acid

Classification

Bonding

Double Bonds: 5
Triple Bonds: 0
Sigma Bonds: 18
Pi Bonds: 5
Total: 23
Carboxyl Groups: 2
Hydroxyl Groups: 0
Hybridization: all carbons are sp2; all oxygens are sp3

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Sources