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| CAS No.: | 1314-85-8 |
|---|---|
| Name: | PHOSPHORUS SESQUISULFIDE |
| Molecular Structure: | |
|
|
|
| Formula: | P4S3 |
| Molecular Weight: | 220.093 |
| Synonyms: | Phosphorus(III) sulfide(IV);HSDB 1257;PHOSPHORUS SULFIDE;Phosphorous sesquisulfide;PHOSPHORUS SESQUISULFIDE;Tetraphosphorus trisulphide;Trisulfurated phosphorus;Phosphorus sulfide (P4S3); |
| Density: | g/cm3 |
| Melting Point: | 172.5oC |
| Boiling Point: | °Cat760mmHg |
| Flash Point: | °C |
| Solubility: | 29.3mg/L at 20℃ |
| Hazard Symbols: | Dangerous fire risk, ignites by friction. An irritating poison. |
| Risk Codes: | R11; R22; R50 |
| Safety: | Poison by ingestion. Flammable by spontaneous ignition. When heated to decomposition it emits very toxic fumes of POx and SOx. See also SULFIDES and PHOSPHORUS (red); PHOSPHORUS (yellow). |
| PSA: | 79.03000 |
| LogP: | 4.85400 |
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- 73441-42-6METHYL-5-CHLORO-2,2-DIMETHYLVALERATE
- 7704-34-9
sulfur
A
- 1314-85-8
phosphorus sulfide
- 131105-01-6
phosphorus sulfide
- 39350-99-7
tetraphosphorus tetrasulphide
E
- 12037-82-0
phosphorus sulfide
| Conditions | Yield |
|---|---|
| In melt vac., 10-100 mol% S, heating (1 week, 673 K); extraction (CS2), filtn.; followed by (31)P NMR; |
- 7704-34-9
sulfur
A
- 1314-85-8
phosphorus sulfide
B
- 131105-01-6
phosphorous trisulfide
E
- 12037-82-0
phosphorus sulfide
| Conditions | Yield |
|---|---|
| In melt vac.,; 54 mol% S, heating (573-873 K), standing (5 weeks, room temp.); extraction (CS2), filtn.; followed by (31)P NMR; | |
| In melt vac.,; 54 mol% S, heating (573-873 K); extraction (CS2), filtn.; followed by (31)P NMR; |
- 7704-34-9
sulfur
A
- 15857-57-5
tetraphosphorus decasulfide
B
- 1314-85-8
phosphorus sulfide
C
- 12037-82-0
phosphorus sulfide
- 7719-09-7
thionyl chloride
- 7803-51-2
phosphan
A
- 7647-01-0
hydrogenchloride
B
- 3982-91-0
trichlorothiophosphine
D
- 1314-85-8
phosphorus sulfide
E
- 10025-87-3, 12599-09-6, 63736-95-8
trichlorophosphate
| Conditions | Yield |
|---|---|
| In neat (no solvent) room temp.;; further unidentified liquid products;; |
- 7719-09-7
thionyl chloride
- 7803-51-2
phosphan
A
- 7647-01-0
hydrogenchloride
C
- 1314-85-8
phosphorus sulfide
D
- 10025-87-3, 12599-09-6, 63736-95-8
trichlorophosphate
| Conditions | Yield |
|---|---|
| With 2-methylpyridine In not given byproducts: CH3C5H4NH(PS2Cl2), CH3C5H4NH(Cl); |
- 7791-25-5
sulfuryl dichloride
- 7803-51-2
phosphan
A
- 7647-01-0
hydrogenchloride
C
- 1314-85-8
phosphorus sulfide
D
- 10025-87-3, 12599-09-6, 63736-95-8
trichlorophosphate
| Conditions | Yield |
|---|---|
| With sulfur with pured and dried PH3 in vacuum; at 450°C; equilibrium reaction 3-4.5 mol S for two mol PH3; | |
| With S with pured and dried PH3 in vacuum; at 450°C; equilibrium reaction 3-4.5 mol S for two mol PH3; |
| Conditions | Yield |
|---|---|
| With sulfuryl dichloride In neat (no solvent) react. of SO2Cl2 with dry PH3; formation of HCl, P4S3, red P, POCl3 and P2O3;; | |
| With thionyl chloride In neat (no solvent) react. of SOCl2 with dry PH3; formation of HCl, P4S3 and red P;; |
- Total:10 Page 1 of 1 1
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Chemistry
MF: P4S3
MW: 220.09
EINECS: 215-245-0
Appearance: A yellow crystalline solid
Appearance: Product Categories: Inorganics
Synonyms: Phosphorus esquisulfide ; Tetraphosphorus trisulfide ; 3,5,7-trithia-1,2,4,6-tetraphosphatricyclo[2.2.1.02,6]heptane ; P4-S3 ; Phosphorous sesquisulfide ; phosphoroussesquisulfide ; phosphoroussesquisulfide[qr] ; Phosphorus (iii) sulfide
Following is the molecular structure of Phosphorus esquisulfide (1314-85-8):
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Uses
Phosphorus esquisulfide (1314-85-8)is used to make matches and in the manufacture of other chemicals.
A 1:2 mixture of Phosphorus esquisulfide (1314-85-8) and potassium chlorate, together with other materials, comprises the heads of "strike-anywhere matches".
Production
Air & Water Reactions: Highly flammable.Slowly decomposed by water to form phosphoric acid and toxic hydrogen sulfide gas (H2S). May ignite on contact with water or moist air.
Toxicity Data With Reference
| 1. | orl-rbt LDLo:100 mg/kg | SAPHAO Skandinavisches Archiv fuer Physiologic. 15 (1904),259. |
Safety Profile
Poison by ingestion. Flammable by spontaneous ignition. When heated to decomposition it emits very toxic fumes of POx and SOx.
Safety Information of Phosphorus esquisulfide (1314-85-8):
Hazard Codes: F,Xn,N
F: Highly Flammable .gif){kind=small}
Xn: Harmful .gif){kind=small}
N: Dangerous for the environment .gif){kind=small}
Risk Statements: 11-22-50
11: Highly Flammable
22: Harmful if swallowed
50: Very Toxic to aquatic organisms
Safety Statements: 7-16-24/25-61
7: Keep container tightly closed
16: Keep away from sources of ignition - No smoking
24/25: Avoid contact with skin and eyes
61: Avoid release to the environment. Refer to special instructions safety data sheet
RIDADR: 1341
RTECS: TH4330000
HazardClass: 4.1
PackingGroup: II
Standards and Recommendations
DOT Classification: 4.1; Label: Flammable Solid
Specification
Depending on purity, samples can appear yellow-green to grey. Phosphorus esquisulfide (1314-85-8) was discovered by G. Lemoine and first produced safely in commercial quantities in 1898 by Albright and Wilson. It dissolves in an equal weight of carbon disulfide (CS2). Unlike some other phosphorus sulfides, P4S3 is slow to hydrolyze and has a well-defined melting point.