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Chemical Collodion is a solution of nitrocellulose in ether or acetone, sometimes with the addition of alcohols. Its generic name is pyroxylin solution. It is toxic and highly flammable. As the solvent evaporates, it dries to a celluloid-like film. It was discovered about 1846 by the French chemist and writer Louis Ménard. Skeletal formula of nitrocellulose Ball-and-stick model of a section of nitrocellulose Nitrocellulose (also: cellulose nitrate, flash paper) is a highly flammable compound formed by nitrating cellulose through, for example, exposure to nitric acid or another powerful nitrating agent. ...
This article is about the chemical compound. ...
The chemical compound acetone (also known as propanone, dimethyl ketone, 2-propanone, propan-2-one and β-ketopropane) is the simplest representative of the ketones. ...
Functional group of an alcohol molecule. ...
Toxic redirects here, but this is also the name of a song by Britney Spears; see Toxic (song) Look up toxic and toxicity in Wiktionary, the free dictionary. ...
Flammable or Flammability refers to the ease at which a substance will ignite, causing fire or combustion. ...
Celluloid is the name of a class of compounds created from nitrocellulose and camphor, plus dyes and other agents, generally regarded to be the first thermoplastic. ...
You may be looking for Louis Menand Louis-Nicolas Ménard (19 October 1822 - 9 February 1901) was a French man of letters also known for his disovery of collodion. ...
- Celloidin is a pure type of pyroxylin used to embed specimens which will be examined under a microscope. [1]
Robert Hookes microscope (1665) - an engineered device used to study living systems. ...
Photography (also known as the Wet Plate Collodion process)
 "Summer w/Guitar" 2005. 11"x14" Ambrotype by artist/photographer Quinn Jacobson. In 1851, the Englishman Frederick Scott Archer discovered that collodion could be used as an alternative to albumen on glass plates. This also reduced the exposure time when making the image. This became know as the wet plate Collodion or wet collodion method. Collodion was also grainless and colorless, and allowed for one of the first high quality duplication processes, also known as negatives. This process also produced positives, the Ambrotype and the Ferrotype (aka Tintypes). Image File history File links No higher resolution available. ...
Image File history File links No higher resolution available. ...
Many ambrotypes were made by unknown photographers, such as this American example of a small girl holding a flower, circa 1860. ...
This is a ferrotype, circa 1870, possibly made in Philadelphia, of an African-American man leaning on a hitching post. ...
The process was very involved and included the following steps:
- Clean the glass plate (extrememly well) - Flow the glass plate with "salted" (iodide/bromide) Collodion - Immerse the plate in a silver nitrate bath (for 3-5 minutes) - Exposing the plate (can range from less than a second to several minutes) - Develop the plate (using an iron based developer) - Fix the plate (with potassium cyanide or sodium thiosulfate) - Varnish the plate (with a varnish made from gum sandarac, alcohol and lavendar oil) All of this was done in a matter of minutes, which meant that the photographer had to carry the chemicals with him wherever he went.
See this page for more information collodion process or http://www.collodion.com The collodion process is an early photographic process which gave way in the late 19th century to todays gelatin emulsion process. ...
Richard Norris, a doctor of medicine and professor of physiology at Queen's College, Birmingham, is generally credited with the first development of dry collodion plate in the 1860's. In 1894 he took out a new patent for dry plate used in photography. Birmingham (pron. ...
Dry plate, also known as gelatine process, is the first economical successful durable photographic medium. ...
Photography [fәtɑgrәfi:],[foʊtɑgrәfi:] is the process of recording pictures by means of capturing light on a light-sensitive medium, such as a film or sensor. ...
Medical One example, Compound W Wart Remover, still exists, consisting of acetic acid and salicylic acid in an acetone collodion base. Pyroxlin solution is also used presently in MedTech's NewSkin liquid bandage product. Acetic acid, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell. ...
Salicylic acid is the chemical compound with the formula C6H4(OH)CO2H, where the OH group is adjacent to the carboxyl group. ...
The chemical compound acetone (also known as propanone, dimethyl ketone, 2-propanone, propan-2-one and β-ketopropane) is the simplest representative of the ketones. ...
Liquid bandage is a topical skin treatment for minor cuts and sores that is sold by several companies. ...
Other Uses - Collodion was widely used to glue electrodes to the head for electroencephalography until the 1990s. It has been replaced by water-based gels in most uses to avoid the contact with acetone, which is not only contained in the glue but needed in quantity for electrode removal.
- Pyroxylin with added pigments is used as a nitrocellulose lacquer.
- It was also added to nitroglycerine to stabilise it as blasting gelatine.
- Collodion is also used in theatrical makeup for various effects, such as simulating old-age wrinkles or scars.
- Collodion also finds use in the cleaning of optics such as telescope mirrors. The collodion is applied to the surface of the optic, usually in two or more layers. Sometimes a piece of thin cloth is applied between the layers, to hold the collodion together for easy removal. After the collodion dries and forms a solid sheet covering the optic, it is carefully peeled away taking contamination with it.
Girl wearing electrodes for electroencephalography Person wearing electrodes for electroencephalography Portable recording device for electroencephalography Electroencephalography is the neurophysiologic measurement of the electrical activity of the brain by recording from electrodes placed on the scalp or, in special cases, subdurally or in the cerebral cortex. ...
Natural Ultramarine pigment in powdered form. ...
In a general sense, lacquer is a clear or coloured coating, that dries by solvent evaporation only and that produces a hard, durable finish that can be polished to a very high gloss, and gives the illusion of depth. ...
Nitroglycerin (also nitroglycerine, trinitroglycerin, or glyceryl trinitrate) is a chemical compound, a heavy, colorless, poisonous, oily, explosive liquid obtained by nitrating glycerol. ...
Blasting gelatine is an explosive invented by Alfred Nobel. ...
Cosmetics or makeup are substances to enhance the beauty of the human body, apart from simple cleaning. ...
See also list of optical topics. ...
A telescope (from the Greek tele = far and skopein = to look or see; teleskopos = far-seeing) is an instrument designed for the observation of remote objects. ...
Cultural References - Phoenix Suns point guard Steve Nash used Collodion in an NBA playoff game after his nose was cut open in a collision with San Antonio Spurs point guard Tony Parker. He later had to pour water in his eyes after the fumes from the material blurred his vision.
The Phoenix Suns are a professional basketball team, based in Phoenix, Arizona. ...
Steven John Nash[1], OBC (born February 7, 1974) is a Canadian professional basketball player. ...
The San Antonio Spurs are an American professional basketball team based in San Antonio, Texas. ...
William Anthony (Tony) Parker, II (born May 17, 1982)) is a French National Basketball Association (NBA) player with the San Antonio Spurs and captain of Frances national basketball team. ...
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