12037-82-0 Usage
Description
Phosphorus hepta sulfide is a chemical compound with the formula P4S7. It exists in the form of light-yellow crystals, light-gray powder, or a fused solid. Phosphorus hepta sulfide has a melting point of 310°C and a density of 2.19 g/cm3. It is highly reactive, especially in the presence of moisture, which can cause it to spontaneously heat and ignite. When burned, phosphorus hepta sulfide produces phosphorus pentaoxide and sulfur dioxide. The former reacts with water to form phosphoric acid, a corrosive material, while the latter reacts with water to produce phosphoric acid and hydrogen sulfide, a toxic flammable gas with a characteristic rotten-egg smell. Prolonged exposure to hydrogen sulfide can lead to the loss of the sense of smell.
Uses
Used in Chemical Synthesis:
Phosphorus hepta sulfide is used as a reagent in the chemical synthesis of various compounds due to its reactive nature. Its ability to produce phosphorus pentaoxide and sulfur dioxide upon combustion makes it a valuable precursor for the creation of other phosphorus and sulfur-containing compounds.
Used in Pesticide Formulations:
In the agricultural industry, phosphorus hepta sulfide is used as an ingredient in pesticide formulations. Its toxicity and ability to produce hydrogen sulfide when reacting with water make it an effective agent against certain pests and insects.
Used in the Production of Match Heads:
Phosphorus hepta sulfide is also utilized in the production of match heads. Its spontaneous ignition property upon exposure to moisture makes it a suitable component for creating the initial flame when a match is struck.
Used in the Semiconductor Industry:
In the semiconductor industry, phosphorus hepta sulfide is employed as a dopant or a precursor material for the synthesis of other compounds used in the manufacturing of electronic devices.
Used in Research and Development:
Due to its unique chemical properties and reactivity, phosphorus hepta sulfide is also used in research and development for studying various chemical reactions and processes, as well as for the development of new materials and compounds with potential applications in various industries.
Air & Water Reactions
Highly flammable.Reacts with liquid water or atmospheric moisture to form toxic hydrogen sulfide gas and corrosive phosphoric acid.
Reactivity Profile
PHOSPHORUS HEPTASULFIDE is a reducing agent. Can react vigorously with oxidizing agents including inorganic oxoacids, organic peroxides and epoxides. Simple salts of sulfides (such as sodium, potassium, and ammonium sulfide) react vigorously with acids to release hydrogen sulfide gas.
Health Hazard
Highly toxic: contact with water produces toxic gas, may be fatal if inhaled. Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.
Fire Hazard
Produce flammable and toxic gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Containers may explode when heated. Runoff may create fire or explosion hazard.
Safety Profile
A poison by ingestion. Flammable when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits very toxic fumes of POx and SOx. See also SULFIDES and PHOSPHORUS
Check Digit Verification of cas no
The CAS Registry Mumber 12037-82-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,0,3 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 12037-82:
(7*1)+(6*2)+(5*0)+(4*3)+(3*7)+(2*8)+(1*2)=70
70 % 10 = 0
So 12037-82-0 is a valid CAS Registry Number.
InChI:InChI=1/4H3P.7S/h4*1H3;;;;;;;/q4*+3;7*-2
12037-82-0Relevant articles and documents
N.M.R. Evidence for the Existence of P4S8
Barieux, Jean-Jacques,Demarcq, Michel C.
, p. 176 - 177 (1982)
N.m.r. evidence indicates that the primary product of the desulphuration of P4S9 by Ph3P is P4S8, a new species of limited stability.
Pitochelli, A. R.,Audrieth, L. F.
, p. 4458 - 4460 (1959)
Transfer of Sulfur from Arsenic and Antimony Sulfides to Phosphorus Sulfides. Rational Syntheses of Several Less-Common P4Sn Species
Jason, Mark E.
, p. 2641 - 2646 (2008/10/09)
It has been shown that triphenylarsenic sulfide and triphenylantimony sulfide rapidly transfer sulfur to a number of the known phosphorus sulfides. The reactions are performed at or below room temperature in carbon disulfide solutions. The transfers are neither highly selective nor random, making them useful but not ideal for synthetic purposes. The moderate selectivities of the reactions have been used in the assignment of structures to two new phosphorus sulfides, structures with molecular formulas P4S6 and P4S8. The reactions of P4S3 are unusual in that products with 7-9 sulfur atoms in the molecule are formed competitively with low sulfur products. The usefulness of triphenylantimony sulfide is limited by its tendency to undergo reductive elimination of sulfur. This reduction takes the form of a disproportionation to give triphenylantimony and elemental sulfur and has been shown to occur by a second-order process that appears to involve the formation of disulfur, S2.
Derivatives of arsenic substituted phosphorus chalcogenides
Blachnik, Roger,Neto
, p. 1043 - 1047 (2008/10/09)
α-AsP3S3I2, α-AsP3Se3I2, and three isomers of β-AsP3S3I2 were observed besides several phosphorus sulfides by 31P NMR spectroscopy after the reac
