Important notice: Website update - 21st of January 2025
We're merging our website with our main site and to offer a more streamlined experience. To make the switch smooth, this website will be unavailable for maintenance today. This means you won't be able to purchase publications. Don't worry, everything will be available on the new site by the end of the day. To avoid any hiccups, we recommend holding off on purchases until then. Thank you for your patience, and see you on the new site soon!
IP 401: Liquefied petroleum gases - detection of hydrogen sulfide- Lead acetate method
- Method adopted/last revised:
- Method reapproved: 2019
- REF/ISBN:
- Status: Current
- First printed in STM books: 1995
-
This International Standard specifies a method for the detection of hydrogen sulfide in
liquefied petroleum gases.
The lower limit of detectability is 4 mg of hydrogen sulfide in 1 m3 of liquefied
petroleum gas. Methyl mercaptan, if present, produces a transitory yellow stain on lead
acetate paper which, however, fades completely in less than 5 min. Other sulfur com
pounds present in liquefied petroleum gas do not in terfere with the test.
NOTE 1 Liquefied petroleum gases and the products of their combustion should not be
unduly corrosive or reactive to materials with which they come into contact. It is there fore
important that the presence of any hydrogen sulfide, a highly reactive substance, be
detected. Additionally, the odour of hydrogen sulfide is unacceptable in some applica
tions of liquefied petroleum gases (e.g. lighter fuel).
Members Benefits
Are you an EI Member? If yes, register/log in now to ensure you receive free access or discounts to EI publications.
If you are not a Member, why not join today and receive all of the benefits of EI Membership? EI Members are entitled to a 25% discount on most EI publications.