Synonym(s): 2-Methylacrylic acid, 2-Methylpropenoic acid Formula: C4H6O2 Formula weight: 86.09 Purity: 99%, stab. with 100-250ppm hydroquinone or 4-methoxyphenol CAS Number: 79-41-4 UN Number: UN2531 Hazard Class: 8 Packing Group: II Harmonized Tariff Code:  2916.13 …