Abstract

The infrared absorption coefficient of H2SO4 vapor has been measured for the first time. The vapor was obtained from liquid acid held at the azeotrope. The temperature dependence of the absorption confirmed that the azeotrope concentration was accurate to better than 1%. The P, Q, and R branches of the measured band cover a spectral range of 1190 to 1260 cm−1. The peak absorption coefficient of 4.16 ±0.15 atm−1 cm−1 occurred at 1222 cm−1 within the Q branch, with an integrated absorption coefficient of 120 atm−1cm−2 over the entire band. Within the resolution of the experiment, 0.5 cm−1, no fine structure was observed on this band.

© 1977 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Absorption coefficients of solid NH3 from 50 to 7000 cm−1

Godfrey Sill, Uwe Fink, and John R. Ferraro
J. Opt. Soc. Am. 70(6) 724-739 (1980)

Infrared optical constants of a ternary system of 75% H2SO4, 10% HNO3, and 15% H2O

R. W. Adams and H. D. Downing
J. Opt. Soc. Am. A 3(1) 22-28 (1986)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription