Collodion
Collodion (from collodion - Greek-Latin, Greek kollodes "glue-like", to kolla "glue") is a viscous solution of collodion wool in a mixture of ether and alcohol (1: 2). In medicine it is used as a sealant for smaller wounds and for the production of corn and wart tinctures. It is also used in the paint and photographic industries as well as in the manufacture of blasting gelatine and adhesives .
Collodion can be mixed with alcohol, acetone or the same amount of ether. To check the identity , 5 ml of the sample can be shaken with 20 ml of water, then a flaky white mass adhering to the walls separates.
Furthermore, collodion is used in make- up making - for example to create scars .
For decades, collodion has been used as an electrode adhesive for the derivation of electrical biosignals in electrophysiology and over longer periods of several days in epilepsy and sleep diagnostics . In the past, the skin was removed with acetone (nail polish remover), but today an almost odor-free remover liquid on an oily basis is used for reasons of skin tolerance.
In the mid-19th century, collodion was used by Frederick Scott Archer to develop the wet collodion process used to make photosensitive plates in the early days of photography .
At dairy cattle exhibitions in Switzerland, collodion (max. 8%) is allowed to glue the teats to prevent unwanted milk leakage during a show.
Collodion is removed manually from humans and animals. In stubborn cases, a collodion remover with ingredients such as ethyl acetate (ethyl acetate), petroleum distillate, isopropanol (isopropyl alcohol), isopropyl myristate ( isopropyl myristate) can be used.
See also
Web links
Individual evidence
- ↑ The teats stick together
- ↑ Study on udder filling in show cows In: unibe.ch October 23, 2017, accessed on April 4, 2018.
- ↑ Ineffective sanctions - big udder, big suffering In: srf.ch April 3, 2018, accessed on April 4, 2018.