WET PLATE CHEMICALS
(Dutch-cadmium bromide; French – le bromure de cadmium; German- Cadmium Bromid; Spanish- bromuro de cadmio)
IUPAC Name: dibromocadmium
Cadmium bromide is a yellow or cream-coloured crystalline ionic cadmium salt of hydrobromic acid that is soluble in water and alcohol. It is very toxic, along with other cadmium compounds. It is used in photography, process engraving, and lithography.
(Dutch-Ammoniumbromide German-Ammoniumbromid French -le bromure d’ammonium Spanish-bromuro de amonio)
IUPAC Name: azanium bromide
Ammonium bromide, NH4Br, is the ammonium salt of hydrobromic acid. The chemical crystallizes in colorless prisms, possessing a saline taste; it sublimes on heating and is easily soluble in water. On exposure to air it gradually assumes a yellow color because of the oxidation of traces of bromide (Br–) to bromine (Br2). Used in photography and for pharmaceutical preparations (sedatives).
(Dutch- Kalium Jodide German-Kaliumjodid French -iodure de potassium Spanish-yoduro de potasio)
IUPAC Name: potassium iodide
Potassium iodide is an inorganic compound with the chemical formula KI. This white salt is the most commercially significant iodide compound, with approximately 37,000 tons produced in 1985. It is less hygroscopic (absorbs water less readily) than sodium iodide, making it easier to work with. Aged and impure samples are yellow because of aerial oxidation of the iodide to elemental iodine. Potassium iodide is a mild irritant and should be handled with gloves. Chronic overexposure can have adverse effects on the thyroid. chemical used in bleaches, toners and intensifiers.
(Dutch- Kaliumbromide German- Kaliumbromid French – le bromure de potassium Spanish- bromuro de potasio)
IUPAC Name: potassium bromide
Potassium bromide (KBr) is a salt, widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries, with over-the-counter use extending to 1975 in the US. Its action is due to the bromide ion (sodium bromide is equally effective). Potassium bromide is used as a veterinary drug, as an antiepileptic medication for dogs and cats.
Under standard conditions, potassium bromide is a white crystalline powder. It is freely soluble in water. In a dilute aqueous solution, potassium bromide tastes sweet, at higher concentrations it tastes bitter, and at even higher concentrations it tastes salty. These effects are mainly due to the properties of the potassium ion—sodium bromide tastes salty at any concentration. In high concentration, potassium bromide strongly irritates the gastric mucous membrane, causing nausea and sometimes vomiting (a typical effect of all soluble potassium salts). chemical used as a restrainer in most developing solutions and as a rehalogenizing agent in bleaches.
In addition to manufacture of silver bromide, potassium bromide is used as a restrainer in black and white developer formulas. It improves differentiation between exposed and unexposed crystals of silver halide, and thus reduces fog
Plain collodion USP (Not the flexible collodion)
(Dutch- collodium German- French – Spanish- )
www.labstuff.nl (Capelle a/d IJssel)
Collodion is a flammable, syrupy solution of pyroxylin (a.k.a. “nitrocellulose”, “cellulose nitrate”, “flash paper”, and “gun cotton”) in ether and alcohol. There are two basic types; flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible nitrocellulose film. While it is initially colorless, it discolors over time. Non-flexible collodion is often used in theatrical make-up.
(Dutch-ether German-Äther French – l’éther Spanish- éter )
IUPAC Name: oxidane
Ethers (pron.: /ˈiːθər/) are a class of organic compounds that contain an ether group — an oxygen atom connected to two alkyl or aryl groups — of general formula R–O–R’.A typical example is the solvent and anesthetic diethyl ether, commonly referred to simply as “ether” (CH3-CH2-O-CH2-CH3). Ethers are common in organic chemistry and pervasive in biochemistry, as they are co