12037-82-0 Usage
Chemical Properties
light yellow crystal(s) [HAW93]
General Description
Light-yellow crystals, light-gray powder, or fused solid. Melting point 310°C. Density 2.19 g / cm3. May spontaneously heat and ignite under exposure to moisture. Produces phosphorus pentaoxide and sulfur dioxide during combustion. Phosphorus pentaoxide reacts with water to form phosphoric acid, a corrosive material. Phosphorus heptasulfide reacts with water to form phosphoric acid and hydrogen sulfide, a toxic flammable gas with a rotten-egg smell. Continued exposure to hydrogen sulfide disables the sense of smell.
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)
Products and Mechanisms in the Oxidation of Phosphorus by Sulfur at Low Temperature
Jason, Mark E.,Ngo, Toan,Rahman, Shahidur
, p. 2633 - 2640 (2008/10/09)
The oxidation of phosphorus by sulfur at low temperatures (8 diradical. This proposal is supported by the observed rate at which the sulfldes are formed and the distribution of the sulfide product stoichiometries. Photoinitiation of this oxidation at 0 °C produces a similar array of sulfldes. The differences in the product distributions between the thermal and photochemical processes facilitate the understanding of the mother-daughter relationships between the products. The effects of oxidation by sulfur and reduction by phosphorus have been determined for several of the known phosphorus sulfides. The characterizations of phosphorus compounds in molten mixtures of phosphorus and sulfur were performed by 31P NMR and Raman spectroscopy directly on the reaction mixtures.
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
