zinc dust

The duplex stainless steel used is susceptible to contamination by carbon or zinc dust.

Zinc dust was then stirred in, reducing the oxime group to the amine.

We are if you know of a place where we could get ingredients like iodine crystals, ammonium nitrate, and zinc dust.

Barium peroxide and zinc dust.

The metal is recovered from the "pregnant solution" by reduction with zinc dust or by adsorption onto activated carbon.

A laboratory examination showed that the zinc dust reducing agent was fully oxidised, showing that the kit was at least four years old.

Zinc dust may be used either alone or in combination with diethylaluminum chloride and catalytic amounts of copper(I) bromide.

It uses zinc dust and steam to remove copper, cadmium, cobalt, and nickel, which would interfere with the electrolysis process.

Phenylsulfinic acid can be prepared in several ways, most easily through reduction of sulfonyl chlorides with zinc dust or iron.

Then, in 1866, Adolf von Baeyer reduced oxindole to indole using zinc dust.

Conversion of these oxidation states is illustrated by the reduction of a strongly acidic solution of a vanadium(V) compound with zinc dust or amalgam.

When cresol (o-, m-, p-) is distilled with zinc dust, toluene is obtained.

Zinc dust is added to the clarified, de-aerated solution which precipitates the gold; zinc having a higher affinity for the cyanide ion than gold.

The organozinc reagent, also called a 'Reformatsky enolate', is prepared by treating an alpha-halo ester with zinc dust.

An example is the conversion of pentafluorobenzoic acid to 3,4,5-tetrafluorobenzoic acid in a reaction of zinc dust in aqueous ammonia.

Phenol is reduced to benzene when it is distilled with zinc dust or its vapour is passed over granules of zinc at 400 C:

Historically, treatment of haloketones with zinc dust in the Reformatsky reaction was one of the first reliable methods for generating unstabilized enolates.

In related reactions, 1,2-dibromocompounds are debrominated by zinc dust to give alkenes and geminal dihalides can react with strong bases to give carbenes.

Mantle did not know at the time that most of the men in his family had inhaled lead and zinc dust in the mines, which contribute to Hodgkins' and other cancers.

Like europium, samarium, and thulium, the trihalides of ytterbium can be reduced by hydrogen, zinc dust, or by the addition of metallic ytterbium to the dihalides.

The new governments of Eastern Europe have created environmental departments, and they acknowledge that cleaning up will mean closing many outdated plants and tearing down neighborhoods steeped in lead and zinc dust.

The use of triphenylphosphine, thiourea, zinc dust, or dimethyl sulfide produces aldehydes or ketones while the use of sodium borohydride produces alcohols.

Modern practice is to add the oxime solution resulting from the nitrosation and the zinc dust gradually to a well-stirred solution of ethyl acetoacetate in glacial acetic acid.

The couple may also be generated in situ by reaction of one equivalent of zinc dust with one equivalent of copper(I) chloride (or copper powder) in refluxing ether.

During the mid-1950s, "amateur" rocketeers flew a number of zinc dust / sulfur "micrograin" solid propellant mail-carrying rockets interstate, from California, across the Colorado River, and into Arizona.