Tris(trimethylsilyl) phosphate
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Tris(trimethylsilyl) phosphate
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CAS No:
10497-05-9
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Formula:
C9H27O4PSi3
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Chemical Name:
Tris(trimethylsilyl) phosphate
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Synonyms:
Silanol,1,1,1-trimethyl-,1,1′,1′′-phosphate;Silanol,trimethyl-,phosphate (3:1);Tris(trimethylsilyl) phosphate;Tris(trimethylsiloxy)phosphine oxide;PC 9983
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CAS No:
Safety Information
III
3.2
UN 1993 3/PG 2
2
11-36/37/38
16-26-36
TC9700000
F,Xi
P210-P261-P305 + P351 + P338
H225-H315-H319-H335
|Danger|H225 (51.22%): Highly Flammable liquid and vapor [Danger Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 82 companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Tris(trimethylsilyl) phosphate Use and Manufacturing
To the reflux condenser, thermometer 1000ml three-necked flask was added352 g (3.24 mol) of trimethylchlorosilane and 115 g (1 mol) of ammonium dihydrogen phosphate were added, and the mixture was stirred at 78 ° C for 3 hours under stirring. After the reaction was filtered, the filtrate was tris (trimethylsilyl) phosphate crude, and then vacuum distillation, collecting 125 ~ 128 / 30mmHg fraction, 282 g of tris (trimethylsilyl) phosphate was obtained in a yield of 89.6percent. An exhaust gas absorption device was connected to the outlet of the reflux condenser. The exhaust gas absorption device absorbed the generated hydrogen chloride gas by water.General procedure: To a dry, nitrogen flushed 100mL Schlenk-tube containing a solution of phosphorous acid (1.64g, 20mmol for the synthesis of 4a) [or potassium dihydrogen phosphate (2.72g, 20mmol for the synthesis of 4b)] in formamide (10mL) trimethylsilyl chloride (5.4g, 50mmol) is added. The resulted binary (4a) or ternary system (4b) was vigorously stirred (caution: exothermic reaction, HCl gas formation). After 1h stirring, petrol ether (40mL) was added and stirring was continued for ca. 5min. The top, clear layer of the new binary or ternary system was transferred to a dry 50mL Schlenk-tube, and the solvent as well as excess TMSCl and TMS–O–TMS were evaporated off under reduced pressure (ca. 12mbar) at 40°C.
Silanol, 1,1,1-trimethyl-, 1,1',1''-phosphate: ACTIVE
Computed Properties
Molecular Weight:314.54
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:6
Exact Mass:314.09547594
Monoisotopic Mass:314.09547594
Topological Polar Surface Area:44.8
Heavy Atom Count:17
Complexity:253
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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