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Lawesson'S Reagent
Lawesson'S Reagent / CAS : 19172-47-5
| Appearance | At room temperature and pressure, it is a slightly yellow solid powder with a strong and unpleasant odor of decay. | UN | 3278 |
| HS | 29309090 | DG Class | 4.3 |
| Synonyms | Aurora Ka-1707; 2,4-Bis(4-Methoxyphenyl)-1,3-Dithia-2,4-Diphosphetane 2,4-Disulfide; Lawesson Reagent; Lawesson'S; Lawesson`S Reagentsulfide Dimer; 2,4-Bis(4-Methoxyphenyl)-1,3,2,4-Dithiadiphosphetane 2,4-Disulfide; Lawesson'S; 4-Methoxyphenylthiophosphoric Cyclic Di(Thioanhydride), Lr, 2,4-Bis(4-Methoxyphenyl)-2,4-Dithioxo-1,3,2,4-Dithiadiphosphetane, 2,4-Bis-(4-Methoxyphenyl)-1,3-Dithia-2,4-Diphosphetane 2,4-Disulfide; Lawesson'S Reagent ,99%; 1,3-Bis(4-Methoxyphenyl)-2,4-Dithia-1,3-Diphospha(V)Cyclobutane-1,3-Dithione; 2,4-Bis(4-Methoxyphenyl)-1,3-Dithia-2,4-Diphospha(V)Cyclobutane-2,4-Dithione; 2,4-Bis(4-Methoxyphenyl)-1,3-Dithia-2,4-Diphosphacyclobutane-2,4-Dithione; 2,4-Bis(P-Methoxyphenyl)-1,3,2,4-Dithiadiphosphetane-2,4-Dithione; 2,4-Bisthiolato-2,4-Bis(4-Methoxyphenyl)-1,3-Dithia-2,4-Diphospha(V)Cyclobutane-2,4-Diylium; 2,4-Di(4-Methoxyphenyl) -1,3,2Lambda~5~,4Lambda~5~-Dithiadiphosphetane-2, 4-Dithione (Lawesson'S Reagent) | ||
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Properties
Summary
Formula
C14H14O2P2S4
Molecular Mass
404.46700
Exact Mass
403.93500
PSA
152.86000
Logp
6.05480
IUPAC
2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2lambda5,4lambda5-dithiadiphosphetane
SMILES
COC1=CC=C(C=C1)P2(=S)SP(=S)(S2)C3=CC=C(C=C3)OC
Attribute classification
Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates
Auxiliary > Other Auxiliary Agent
Auxiliary > Other Auxiliary Agent
Chemical and Physical Properties
Melting Point
228-230 °C(lit.)
Density
1.48g/cm3
Boiling Point
525.8ºC at 760mmHg
Appearance
At room temperature and pressure, it is a slightly yellow solid powder with a strong and unpleasant odor of decay.
Export information
HS Code
29309090
Export Rebate
13%
UN No.
3278
DG-Class
4.3
Risk Code
R15/29; R20/21/22
Safety Label
F; Xn
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