sulfur

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sul·fur

also sul·phur (sŭl′fər)

1. Symbol S A pale yellow nonmetallic element occurring widely in nature in several free, allotropic and crystal forms and combined in numerous sulfates and sulfides. It is used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, and in the preparation of sulfur compounds such as hydrogen sulfide and sulfuric acid. Atomic number 16; atomic weight 32.066; melting point 115.21°C; boiling point 444.61°C; specific gravity at 20°C (rhombic) 2.07, (monoclinic) 2.00; valence 2, 4, 6. See Periodic Table.

2. Any of various butterflies of the subfamily Coliadinae of the family Pieridae, having yellow or orange wings often marked with black.

tr.v. sul·fured, sul·fur·ing, sul·furs also sul·phured or sul·phur·ing or sul·phurs

To treat with sulfur or a compound of sulfur.

[Middle English, from Anglo-Norman sulfre, from Latin sulfur.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sulfur

(ˈsʌlfə)

(Elements & Compounds) the US preferred spelling of sulphur

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

sul•fur

(ˈsʌl fər)

n.

1. Also, esp. Brit., sulphur. a nonmetallic element, ordinarily a flammable yellow solid, of widespread occurrence in combined form, as in sulfide and sulfate compounds and cellular protein: used esp. in making gunpowder and matches, in medicine, and in vulcanizing rubber.Symbol: S; at. wt.: 32.064; at. no.: 16; sp. gr.: 2.07 at 20° C.

2. sulphur (def. 2).

[1300–50; Middle English < Latin sulp(h)ur, sulfur brimstone, sulfur]

sul·fur

also sul·phur (sŭl′fər)

Symbol S A pale-yellow, brittle nonmetallic element that occurs widely in nature, especially in volcanic deposits, many common minerals, natural gas, and petroleum. It is used to make gunpowder and fertilizer, to vulcanize rubber, and to produce sulfuric acid. Atomic number 16. See Periodic Table.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun	1.	sulfur - an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions) atomic number 16, sulphur, S chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter brimstone, native sulfur, native sulphur - an old name for sulfur sulfide, sulphide - a compound of sulphur and some other element that is more electropositive oil of vitriol, sulfuric acid, sulphuric acid, vitriol - (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry
Verb	1.	sulfur - treat with sulphur in order to preserve; "These dried fruits are sulphured" sulphur process, treat - subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition; "process cheese"; "process hair"; "treat the water so it can be drunk"; "treat the lawn with chemicals" ; "treat an oil spill"

Translations

síra

svovl

SchwefelSulfur

θείο

sulfuro

azufre

väävel

rikki

soufre

sumpor

kén

belerangsulfur

brennisteinn

solforare zolfo

sulfursulpur

siera

sulf

síra

žveplo

svavel

kükürt

lưu

sul·fur

n. azufre, sulfuro.

References in classic literature ?

Gunpowder was not invented by any one; it was the lineal successor of the Greek fire, which, like itself, was composed of sulfur and saltpeter.

View in context

and Li, C.-X.," Removal of thiophenic sulfurs using an extractive oxidative desulfurization process with three new phosphotungstate catalysts", Industrial and Engineering Chemistry Research, 51: 6658-6665 (2012).

Desulfurization proceeds due to crude oil properties mainly high boiling range, high fluidity, high sulfur content and nat ure of sulfur content.

In petroleum after carbon and hydrogen sulfur is most common constituent.

Sulfur content is very important during transportation of fuel and in refineries processing cost.

METHODS FOR DESULFURIZATION OF CRUDE OIL- A REVIEW

Sulfur vulcanization is widely used in the tire industry.

Basically, the solutions found until this moment have to do mainly with the following three options: sulfur substitution by sulfur donor compounds, chemical treatment of the sulfur and/or the improvement of the affinity between sulfur and the polymer matrix.

In order to improve the sulfur-polymer miscibility, different products can be introduced to coat the sulfur and increase its affinity with the polymer matrix.

Plasma polymerization of powder sulfur could be an efficient way to modify sulfur surface polarity without the necessity to add more ingredients to the rubber formulation.

Plasma polymerization of sulfur to decrease the blooming effect and its effect on vulcanization with different accelerators

A recent article in the Mineralogical Record (Pagano, 2002) described how some purportedly natural Sicilian sulfur specimens sold in the 1970's had actually been manufactured, and cannot be readily distinguished from natural specimens on the basis of morphology, associations or chemical analysis.

The element sulfur contains 16 protons and 16 electrons per atom.

Sulfur isotope ratios are measured relative to the same ratio in a standard, which allows greater precision and renders comparable the results from all labs.