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Diisopropyl phosphite
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Name

Diisopropyl phosphite

 EINECS 217-317-7
CAS No. 1809-20-7 Density 0.997 g/cm3
PSA 52.28000 LogP 2.05560
Solubility Soluble in water Melting Point N/A
Formula C6H15O3P Boiling Point 195.513 °C at 760 mmHg
Molecular Weight 166.157 Flash Point 90.254 °C
Transport Information UN 3265 Appearance clear, colorless clear liquid.
Safety 37/39-26 Risk Codes 36/37/38-22
Molecular Structure Molecular Structure of 1809-20-7 (Diisopropyl phosphite) Hazard Symbols HarmfulXn
Synonyms

Isopropylphosphonate ((C3H7O)2HPO) (6CI,7CI);Phosphonic acid, diisopropyl ester (8CI);Bis(2-propyl) phosphite;Diisopropoxyphosphine oxide;Diisopropyl hydrogenphosphite;Diisopropyl phosphite;Diisopropyl phosphonate;Isopropyl phosphite((C3H7O)2(HO)P);NSC 82344;O,O-Diisopropyl phosphonate;

Article Data 65

Diisopropyl phosphite Chemical Properties

Molecular Formula: C6H15O3P
Molar mass: 166.16 g/mol
EINECS: 217-317-7
Flash Point: 92.8 °C
Water solubility: Soluble
Sensitive: Moisture Sensitive
Appearance: Clear colourless liquid
Boiling Point: 229.9 °C at 760 mmHg
Vapour Pressure: 0.0242 mmHg at 25°C
Solubility: Soluble in organic solvents such as ethanol
Product categories: Pesticide and Fungicide Intermediates; Organophosphorus Fungicides
Structure of Diisopropyl phosphite (1809-20-7):
                
XLogP3-AA: 1.1
H-Bond Donor: 1
H-Bond Acceptor: 3
Systematic Name: Diisopropyl hydrogen phosphite
SMILES: O(P(OC(C)C)O)C(C)C 
InChI: InChI=1/C6H15O3P/c1-5(2)8-10(7)9-6(3)4/h5-7H,1-4H3 
InChIKey: NFORZJQPTUSMRL-UHFFFAOYAW 
Std. InChI: InChI=1S/C6H15O3P/c1-5(2)8-10(7)9-6(3)4/h5-7H,1-4H3 
Std. InChIKey: NFORZJQPTUSMRL-UHFFFAOYSA-N

Diisopropyl phosphite Uses

 Diisopropyl phosphite (1809-20-7) is a dedicated pesticide intermediates. Through the synthesis of O, O-diisopropyl sulfide (alcohol) on behalf of the ammonium phosphate, thereby to prepar organophosphorus fungicide Iprobenfos .

Diisopropyl phosphite Production

It is obtained by the reaction of isopropyl alcohol directly with phosphorus trichloride:
3 (CH3) 2CHOH + PCl3 → [(CH3) 2CHO]2POH +2 HCl ↑ + (CH3)2CHCl
Then take the continuoued speed of isopropyl alcohol(215 kg / h) and phosphorus trichloride (150 kg / h) [the ratio of 3:1 (mol)] to be mixed to have the violent reaction. And ruled out the resulting hydrogen chloride gas from the mixture of mercury quickly by vacuum, and take the resulting crude ester into the falling-film for being heated, and further de-acid, leave the deacidification device in 120 ~ 130°C temperature, and last take them to below 40 ℃.Now, that is the product (content: 92% ~ 95%, the yield of 95% ~ 98%).

Diisopropyl phosphite Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LC50 inhalation 9010mg/m3 (9010mg/m3) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985.
guinea pig LD50 unreported 1500mg/kg (1500mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(7), Pg. 78, 1986.
mouse LC50 inhalation 9085mg/m3 (9085mg/m3) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985.
mouse LD50 oral 1590mg/kg (1590mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985.
rabbit LD50 skin 5700mg/kg (5700mg/kg)   Albright & Wilson Inc. Vol. #OPB-3, Pg. 1984,
rat LC50 inhalation 9600mg/m3 (9600mg/m3) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS
LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985.
rat LD50 oral 1700mg/kg (1700mg/kg)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 29(11), Pg. 51, 1985.

Diisopropyl phosphite Consensus Reports

Reported in EPA TSCA Inventory.

Diisopropyl phosphite Safety Profile

Moderately toxic by ingestion. Mildly toxic by skin contact. Mutation data reported. When heated to decomposition it emits toxic fumes of POx. See also ESTERS.
 

Hazard Codes: Xn
Risk Statements:
22:  Harmful if swallowed 
36:  Irritating to the eyes
37:  Irritating to the respiratory system
38:  Irritating to the skin
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37:  Wear suitable gloves
39:  Wear eye/face protection

Diisopropyl phosphite Specification

 Diisopropyl phosphite (1809-20-7) also can be called Diisopropyl phosphonate ; Diisopropyl hydrogen phosphite ; Phosphinous acid, diisopropyl ester .

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