science-softCon uv/vis+ photochemistry database; www.photochemistry.org; (C) science-softCon 2019 Substance: hydrazine Other Names: diamine Formula: N2H4 CAS-No.: 302-01-2 Study: uv absorption spectrum, photolysis, quantum yields Authors: G.L. Vaghjiani Title: Ultraviolet absorption cross sections for N2H4 vapor between 191-291 nm and H(2S) quantum yield in 248 nm photodissociation at 296 K Journal/Source: J. Chem. Phys., 98, 2123-2131, (1993); DOI:10.1063/1.464190 Data: table, diagram Energy/Wavelength range: 191 - 291 nm Resolution: Temperature: 296 K Temperature dependence: Pressure/Concentration: Phase: vapor pH: Comments: The absolute UV absorption cross section of hydrazine vapor at 253.65 nm was determined to be, sigma(253.65)=(2.859±0.172)×10-20 cm2 molec-1. The primary quantum yield of H(2S) formation in 248.3 nm photodissociation of N2H4 was measured to be 0.85±0.15. Author to whom correspondence should be addressed: (e-mail address):