Brass smell?

Question

This will test you all! What is the residue which seems to come from brass, why this leaves smell on skin after contact & metallic taste in mouth although no contact with mouth or tong. Takes place. Thanks.

Answer 1

Verdigris

Verdigris is the common name for the chemical Cu(CH 3 COO) 2 , or copper(II) acetate. It commonly occurs by the action of acetic acid when copper, brass or bronze is weathered and exposed to air or seawater over a period of time. Its name comes from the Middle English vertegrez, from the Old French verte grez, an alteration of vert-de-Grice — verd (green), de (of), and Grice (Greece)— "green of Greece".

The vivid green color of verdigris makes it a very common pigment. Until the 19th century, verdigris was the most vibrant green pigment available and frequently used in painting. Verdigris is lightfast in oil paint, as numerous examples of 15th century paintings show. However, its lightfastness and air resistance is very low in other media. Copper resinate, made from verdigris, is not lightfast, even in oil paint. In the presence of light and air, green copper resinate becomes stable brown copper oxide. This degradation is to blame for the brown or bronze color of grass or foliage in many old paintings, although not typically those of the "Flemish primitive" painters such as Jan van Eyck, who often used normal verdigris. In addition, verdigris is a fickle pigment requiring special preparation of paint, careful layered application and immediate sealing with varnish to avoid rapid discoloration (but not in the case of oil paint). Verdigris has the curious property in oil painting that it is initially bluish-green, but turns a rich foliage green over the course of about a month. This green is stable. Vergidris fell out of use by artists as more stable green pigments became available.

Verdigris is poisonous and has also been used in medicine and as a fungicide.

Copper(II) acetate is soluble in alcohol and water and slightly soluble in ether and glycerol. It melts at 115 °C and decomposes at 240 °C. It can be prepared by reacting copper(II) oxide, CuO, or copper(II) carbonate, CuCO 3 , with acetic acid, CH3COOH 2 . It is used industrially as a fungicide, a catalyst for organic reactions, and in dyeing (The Merck Index , Ninth Ed., 1976).

Answer 2

No idea Victor, i have seen that brass or copper leaves a stain on the skin but have never experienced the metal taste in the mouth.!!!

Answer 3

Brass is an alloy of metals and by way of itself has no scent. even nonetheless, cleaners to do away with tarnish are in simple terms approximately continually used on brass products and outcome in that strange steel scent that it has. you may usually scent the comparable factor for nickel and copper.

Answer 4

If it is green, it is definitely verdigris, and it is a good thing if you do not try to taste it as it is extremely poisonous.

Answer 5

Only if they don,t shower between punters sorry bout that but me naughty side took over me keyboard for a second or two

Answer 6

no clue but thanx 4 2 points

love from useless girl

Answer 7

are you referring to Verdigris - which is copper oxide which mixed with vinegar can be used as a fungicide I believe ... But I could be mistaken ...

Answer 8

VERDIGRIS.