It is an elemental sulfur and a homomonocyclic compound. Sulfur is a chemical element that is present in all living tissues. The most commonly used form of pharmaceutical sulfur is Octasulfur (S8).
Is S8 a planar molecule?
Well, if we consider the most occurring structure of S8 then we are referring to the alpha cyclo S8 and we know that alpha cyclo S8 is not in one plane. It is a crown shaped structure and thus it’s bond will be 107.8 degrees.
Does the S8 have IR?
The IR blaster feature became available with the Galaxy S4 mobile phone, and it was last used on the Galaxy S6. The company has stopped implementing the IR blaster on their latest products because not many people used it. The feature became obsolete, so you won’t find it on your Galaxy S8.
Is S8 organic compound?
Product Code S8 Product Name MAGNET ... Volatile organic compounds content (VOC) 7.27 lbs/gal Total volatiles weight percent 100 % Total volatiles volume percent 100 ...
Is an element the same thing as a compound?
The main difference between an element and a compound is that an element is made up of the same type of atom throughout while a compound is composed of multiple different elements. Both are pure chemical substances found in nature. Compounds are chemically mixed together in a fixed ratio.
Is the formula S8 a compound or element?
Octasulfur is an inorganic chemical with the chemical formula S8. It is an odourless and tasteless yellow solid, and is a major industrial chemical. It is the most common allotrope of sulfur and occurs widely in nature....CHEBI:29385 - cyclooctasulfur.ChEBI NamecyclooctasulfurDownloadMolfile XML SDF9 more rows•Feb 18, 2014
What element is S8?
sulfurOctasulfur is an inorganic chemical with the chemical formula S 8. It is an odourless and tasteless yellow solid, and is a major industrial chemical. It is the most common allotrope of sulfur and occurs widely in nature.
Is a sulfur a compound or element?
sulfur (S), also spelled sulphur, nonmetallic chemical element belonging to the oxygen group (Group 16 [VIa] of the periodic table), one of the most reactive of the elements.
Is Tetraphosphorus a compound?
tetraphosphorus hexoxide | chemical compound | Britannica.
What means S8?
AcronymDefinitionS8Section 8S8Sulfur
What type of bond is S8?
covalent bondD.W-shaped ring structure. Hint: ${{\text{S}}_{\text{8}}}$ molecule has eight sulphur molecules bonded with each other with a single covalent bond with each sulphur having a covalency of 2 and oxidation state being zero and forms a closed crown-shaped structure or a circular structure.
What form is sulfur?
Sulfur, in its native form, is a yellow crystalline solid. In nature, it can be found as the pure element or as sulfide and sulfate minerals. It is an essential element for life and is found in two amino acids, Cysteine and Methionine.
Is sulfuric mixture a compound?
Is sulfuric acid an element, compound, or mixture? Sulfuric acid (H2SO4) is a compound that has hydrogen (H), sulfur (S), and oxygen (O) in it. Those different elements bond chemically in a fixed certain ratio. Thus, sulfuric acid is a compound.
Which of the following is a sulphur compound?
Sulfur compounds such as hydrogen sulfide, dimethyl sulfide, dimethyl disulfide, methane thiol, carbon disulfide, and carbonyl sulfide are produced by industries like aerobic wastewater treatment plants, composting plants, and rendering plants.
Is P4 a compound or element?
P4 is a substance that is made up of four atoms of the same element, so it is a molecular element.
What is the correct name for the compound sf6?
Sulfur hexafluorideSulfur hexafluoride / IUPAC ID
How is P4 classified?
P4 molecule is a molecular solid which is a polymer.it is a molecular solid as the constituent particles in the solid are P4 molecules.
What is the atomic number of sulfur?
For other uses, see Sulfur (disambiguation). orthorhombic. Sulfur (in British English: sulphur) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S 8.
What are the two types of sulfur compounds?
Some of the main classes of sulfur-containing organic compounds include the following: 1 Thiols or mercaptans (so called because they capture mercury as chelators) are the sulfur analogs of alcohols; treatment of thiols with base gives thiolate ions. 2 Thioethers are the sulfur analogs of ethers. 3 Sulfonium ions have three groups attached to a cationic sulfur center. Dimethylsulfoniopropionate (DMSP) is one such compound, important in the marine organic sulfur cycle. 4 Sulfoxides and sulfones are thioethers with one and two oxygen atoms attached to the sulfur atom, respectively. The simplest sulfoxide, dimethyl sulfoxide, is a common solvent; a common sulfone is sulfolane. 5 Sulfonic acids are used in many detergents.
What are the elements that make up semiconductors?
The principal ores of copper, zinc, nickel, cobalt, molybdenum, and other metals are sulfides. These materials tend to be dark-colored semiconductors that are not readily attacked by water or even many acids. They are formed, both geochemically and in the laboratory, by the reaction of hydrogen sulfide with metal salts. The mineral galena (PbS) was the first demonstrated semiconductor and was used as a signal rectifier in the cat's whiskers of early crystal radios. The iron sulfide called pyrite, the so-called "fool's gold", has the formula FeS 2. Processing these ores, usually by roasting, is costly and environmentally hazardous. Sulfur corrodes many metals through tarnishing .
What is the ionization energy of sulfur?
Sulfur burns with a blue flame with formation of sulfur dioxide, which has a suffocating and irritating odor. Sulfur is insoluble in water but soluble in carbon disulfide and, to a lesser extent, in other nonpolar organic solvents, such as benzene and toluene. The first and second ionization energies of sulfur are 999.6 and 2252 kJ/mol, respectively. Despite such figures, the +2 oxidation state is rare, with +4 and +6 being more common. The fourth and sixth ionization energies are 4556 and 8495.8 kJ/mol, the magnitude of the figures caused by electron transfer between orbitals; these states are only stable with strong oxidants such as fluorine, oxygen, and chlorine. Sulfur reacts with nearly all other elements with the exception of the noble gases, even with the notoriously unreactive metal iridium (yielding iridium disulfide ). Some of those reactions need elevated temperatures.
What is the most common allotrope of sulfur?
Sulfur forms several polyatomic molecules. The best-known allotrope is octasulfur, cyclo-S 8. The point group of cyclo-S 8 is D 4d and its dipole moment is 0 D. Octasulfur is a soft, bright-yellow solid that is odorless, but impure samples have an odor similar to that of matches. It melts at 115.21 °C (239.38 °F), boils at 444.6 °C (832.3 °F) and sublimates easily. At 95.2 °C (203.4 °F), below its melting temperature, cyclo-octasulfur changes from α-octasulfur to the β- polymorph. The structure of the S 8 ring is virtually unchanged by this phase change, which affects the intermolecular interactions. Between its melting and boiling temperatures, octasulfur changes its allotrope again, turning from β-octasulfur to γ-sulfur, again accompanied by a lower density but increased viscosity due to the formation of polymers. At higher temperatures, the viscosity decreases as depolymerization occurs. Molten sulfur assumes a dark red color above 200 °C (392 °F). The density of sulfur is about 2 g/cm 3, depending on the allotrope; all of the stable allotropes are excellent electrical insulators.
How much sulfur is in the human body?
It is the eighth most abundant element in the human body by weight, about equal in abundance to potassium, and slightly greater than sodium and chlorine. A 70 kg (150 lb) human body contains about 140 grams of sulfur.
What element is used in matches?
The element sulfur is used in matches, insecticides, and fungicides. Many sulfur compounds are odoriferous, and the smells of odorized natural gas, skunk scent, grapefruit, and garlic are due to organosulfur compounds. Hydrogen sulfide gives the characteristic odor to rotting eggs and other biological processes.
What is the SRP code for sulfur?
For sulfur (USEPA/OPP Pesticide Code: 077501) ACTIVE products with label matches. /SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./
Where does elemental sulfur occur?
Elemental sulfur occurs in salt domes, volcanic deposits and some deposits of calcite, gypsum, and anhydrite. In every state, whether gas, liquid, or solid, elemental sulfur occurs in more than one allotropic form. Three are relevant in nature: -2 (sulfhydryl and sulfide), 0 (elemental sulfur ), and +6 ( sulfate ).
How does a sulfur recovery unit work?
A Claus sulfur recovery unit consists of a combustion furnace, waste heat boiler, sulfur condenser, and a series of catalytic stages each of which employs reheat, catalyst bed, and sulfur condenser. Typically, two or three catalytic stages are employed. The Claus process converts hydrogen sulfide to elemental sulfur via a two-step reaction. The first step involves controlled combustion of the feed gas to convert approximately one-third of the hydrogen sulfide to sulfur dioxide and noncatalytic reaction of unburned hydrogen sulfide with sulfur dioxide. In the second step, the Claus reaction, the hydrogen sulfide and sulfur dioxide react over a catalyst to produce sulfur and water. ... The amount of combustion air is tightly controlled to maximize sulfur recovery, ie, maintaining the appropriate reaction stoichiometry of 2:1 hydrogen sulfide to sulfur dioxide throughout downstream reactors. Typically, sulfur recoveries of up to 97% can be achieved.
How long does sulfur stay in the skin?
The absorption, distribution, and elimination of " sulfur " following topical application have not been fully characterized. Topically applied " sulfur " reportedly penetrates the skin and is detectable in the epidermis within 2 hours after application and throughout the skin within about 8 hours; the drug is not detectable in skin 24 hours after application. Percutaneous absorption of the drug into systemic circulation reportedly occurred following topical application of a 25% " sulfur " ointment to abraded skin of animals but did not occur when the drug was applied to intact skin.
What happens when sulfur is melted?
Vapors given off during melting of sulfur may contain sufficient hydrogen sulfide & carbon disulfide to permit ignition of air/vapor mixture on contact with hot surface; such ignition may result in transmission of flames to molten sulfur. ... Sulfur is poor conductor of electricity & tends to develop charges of static electricity during transport or processing; static discharge may lead to ignition of sulfur dust. Fires in heaps of sulfur are frequent & insidious since they may break out again even after original conflagration has ... Been extinguished.
What is ULSD in diesel?
Hazardous Substances Data Bank (HSDB) Ultra-low sulfur diesel (ULSD) is diesel fuel with 15 parts per million or lower sulfur content. The U.S. Environmental Protection Agency requires 80% of the highway diesel fuel refined in or imported into the United States (100% in California) to be ultra-low sulfur diesel.
How much sulfur is used in fertilizer?
More than 85% of the sulfur consumed in the world is either converted to sulfuric acid or produced directly as such. Worldwide, well over half of the sulfuric acid is used in the manufacture of phosphatic fertilizers and ammonium sulfate for fertilizers.
Overview
Compounds
Common oxidation states of sulfur range from −2 to +6. Sulfur forms stable compounds with all elements except the noble gases.
Sulfur forms over 30 solid allotropes, more than any other element. Besides S8, several other rings are known. Removing one atom from the crown gives S7, which is more of a deep yellow than the S8. HPLC analysis of "elemental sulfur" …
Characteristics
Sulfur forms several polyatomic molecules. The best-known allotrope is octasulfur, cyclo-S8. The point group of cyclo-S8 is D4d and its dipole moment is 0 D. Octasulfur is a soft, bright-yellow solid that is odorless, but impure samples have an odor similar to that of matches. It melts at 115.21 °C (239.38 °F), boils at 444.6 °C (832.3 °F) and sublimates easily. At 95.2 °C (203.4 °F), below its m…
History
Being abundantly available in native form, sulfur was known in ancient times and is referred to in the Torah (Genesis). English translations of the Christian Bible commonly referred to burning sulfur as "brimstone", giving rise to the term "fire-and-brimstone" sermons, in which listeners are reminded of the fate of eternal damnation that await the unbelieving and unrepentant. It is from this pa…
Production
Sulfur may be found by itself and historically was usually obtained in this form; pyrite has also been a source of sulfur. In volcanic regions in Sicily, in ancient times, it was found on the surface of the Earth, and the "Sicilian process" was used: sulfur deposits were piled and stacked in brick kilns built on sloping hillsides, with airspaces between them. Then, some sulfur was pulverized, spr…
Applications
Elemental sulfur is used mainly as a precursor to other chemicals. Approximately 85% (1989) is converted to sulfuric acid (H2SO4):
2 S + 3 O2 + 2 H2O → 2 H2SO4
In 2010, the United States produced more sulfuric acid than any other inorganic industrial chemical. The principal use for the acid is the extraction of phosphat…
Biological role
Sulfur is an essential component of all living cells. It is the eighth most abundant element in the human body by weight, about equal in abundance to potassium, and slightly greater than sodium and chlorine. A 70 kg (150 lb) human body contains about 140 grams of sulfur. It is vital for the production of insulin, keratin and collagen.
Precautions
Elemental sulfur is non-toxic, as are most of the soluble sulfate salts, such as Epsom salts. Soluble sulfate salts are poorly absorbed and laxative. When injected parenterally, they are freely filtered by the kidneys and eliminated with very little toxicity in multi-gram amounts. Aluminium sulfate is used in the purification of drinking water, wastewater treatment plants and papermaking.