Phthalaldehyde (CAS 643-79-8) Sigma-Aldrich

Phthalaldehyde molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 15 grades and pack sizes of Phthalaldehyde (CAS 643-79-8). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	643-79-8
Molecular formula	C8H6O2
Molecular weight	134.13 g/mol
IUPAC name	phthalaldehyde
Synonyms	o-Phthalaldehyde · o-Phthaldialdehyde · 1,2-Benzenedicarboxaldehyde · Phthalic aldehyde · ortho-Phthalaldehyde · benzene-1,2-dicarbaldehyde

Safety & Hazards (GHS) Danger

Corrosive

Acute toxic

Environmental hazard

H301 Toxic if swallowed
H314 Causes severe skin burns and eye damage
H317 May cause an allergic skin reaction
H318 Causes serious eye damage
H400 Very toxic to aquatic life
H410 Very toxic to aquatic life with long lasting effects

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	O-PHTHALDIALDEHYDE	P0657-1G P0657-250MG P0657-5G	Request Quote
Sigma	O-PHTHALDIALDEHYDE REAGENT SOLUTION COMP	P0532-250ML P0532-50ML P0532-5ML	Request Quote
Sigma	O-PHTHALDIALDEHYDE REAGENT SOLUTION INCO	P7914-250ML P7914-50ML	Request Quote
Sigma	PHTHALDIALDEHYDE	P1378-100G P1378-1G P1378-25G P1378-5G	Request Quote
Sigma	PHTHALDIALDEHYDE, FOR FLUORESCENCE	79760-1G 79760-50G 79760-5G	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.