Dictionary » S » Sulphuric



1. Of or pertaining to sulphur; as, a sulphuric smell.

2. (Science: chemistry) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher valence as contrasted with the sulphurous compounds; as, sulphuric acid. Sulphuric acid. Sulphur trioxide (see under Sulphur); formerly so called on the dualistic theory of salts. A heavy, corrosive, oily liquid, H2SO4, colourless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fumes. It attacks and dissolves many metals and other intractable substances, sets free most acids from their salts, and is used in the manufacture of hydrochloric and nitric acids, of soda, of bleaching powders, etc. It is also powerful dehydrating agent, having a strong affinity for water, and eating and corroding paper, wood, clothing, etc. It is thus used in the manufacture of ether, of imitation parchment, and of nitroglycerin. It is also used in etching iron, in removing iron scale from forgings, in petroleum refining, etc, and in general its manufacture is the most important and fundamental of all the chemical industries. Formerly called vitriolic acid, a 659 nd now popularly vitriol, and oil of vitriol. Fuming sulphuric acid, or Nordhausen sulphuric acid. See disulphuric acid. Sulphuric anhydride, sulphur trioxide. See Sulphur. Sulphuric ether, common anaesthetic ether; so called because made by the catalytic action of sulphuric acid on alcohol. See Ether, 3 .

Origin: Cf. F. Sulfurique.

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Re: Odd food poisoning-like symptoms, strange tastes

... Giardia is an intestinal protozoan parasite that can cause various gastro-intestinal problems, one of which is described as "a foul or sulphuric-tasting belch, which has been known to be so nauseating in taste that it can cause the infected person to vomit" (http://en.wikipedia.org/wiki/Giardia_lamblia). ...

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by biohazard
Wed Feb 29, 2012 10:21 am
Forum: Human Biology
Topic: Odd food poisoning-like symptoms, strange tastes
Replies: 34
Views: 101835

Re: acid rain and carbon cycle?

Remember the acids other than Carbonic ( e.g. Sulphuric ) that can make rain acid. Action is different. When they talk about acid rain, then, especially historically, it's good to remember that they might not have been talking only about carbonic.

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by Crucible
Mon Nov 07, 2011 4:21 pm
Forum: Ecology
Topic: acid rain and carbon cycle?
Replies: 10
Views: 7898

Diatom Digestion - Acidity Problem on Slide

... during my work placement. The digestion process starts with the adding of HCL (get rid of salts and iron) then a wash in the centrifuge. Then sulphuric acid is added to get rid of organic matter, potassium permangante is added and the solution is then cleared with oxalic acid. Now the cleared ...

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by casbiostudent
Thu Mar 10, 2011 9:55 am
Forum: Botany Discussion
Topic: Diatom Digestion - Acidity Problem on Slide
Replies: 0
Views: 1933

why do onions make me cry?

yes you are right a low concentration of sulphuric acid is produced on the eye, this is irritant.

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by fireblaze
Mon Aug 07, 2006 8:04 pm
Forum: Physiology
Topic: why do onions make me cry?
Replies: 6
Views: 6490

Sea squirt blood cells

... and electrons, not dioxygen carriage (used to be considered haemovanadin, probably still is ), vacuole pH was about 1 due to the presence of sulphuric acid (now believed to be unfounded). Any help on this one?

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by paperclip
Thu Sep 22, 2005 5:16 am
Forum: Cell Biology
Topic: Sea squirt blood cells
Replies: 0
Views: 1349

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