science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: formic acid					Other Names: methanoic acid

Formula: HCOOH						CAS-No.: 64-18-6

Study: photolysis, quantum yields

                
Authors: R.S. Irwin, D.L. Singleton, G. Paraskevopoulos, R. McLaren

Title: Photochemistry of formic acid monomer at 222 nm

Journal/Source: Int. J. Chem. Kinetics, 26, 219-225, (1993); doi:10.1002/kin.550260121


Data: 

Energy/Wavelength range: 222 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase:

pH:


Comments: Previous studies have shown that the quantum yield for HCOOH + hv  -->  OH + HCO (or H + CO) is 0.70 at 298 K.
The present experimental results indicate that the ratio of the quantum yields of the possible molecular photolysis channels 
forming H2 + CO2 (PHI 1b) and H2O + CO (PHI 1c) is ~ 1.

Author to whom correspondence should be addressed: (e-mail address):