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5381-99-7

Name 2-CHLORO-4H-1,3,2-BENZODIOXAPHOSPHORIN-4-ONE
CAS 5381-99-7
Molecular Formula C7H4ClO3P
MDL Number MFCD00013353
Molecular Weight 202.53
MOL File 5381-99-7.mol
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Chemical Properties

Appearance White Crystalline Solid
Melting point  36-40 °C (lit.)
Boiling point  127-128 °C/11 mmHg (lit.)
Fp  >230 °F
storage temp.  2-8°C
solubility  Soluble in acetonitrile, dichloromethane, tetrahydrofuron and dimethylformamide.
form  solid
Usage Highly reactive cyclic phosphitylating reagent which provides fast coupling rates, and hydrolytic cleavage occurs more readily than with acyclic analogs
BRN  1311951
Stability: Water Sensitive
CAS DataBase Reference 5381-99-7(CAS DataBase Reference)

Safety Data

Hazard Codes  C
Risk Statements 
R14:Reacts violently with water.
R34:Causes burns.
R37:Irritating to the respiratory system.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 3261 8/PG 1
WGK Germany  3
F  3-10
Hazard Note  Corrosive
HazardClass  8
PackingGroup  II
HS Code  29349990

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