Product Name

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  • Name

    POTASAN

  • EINECS
  • CAS No. 299-45-6
  • Article Data6
  • CAS DataBase
  • Density 1.295g/cm3
  • Solubility
  • Melting Point 39.5-41.3°
  • Formula C14H17 O5 P S
  • Boiling Point 425.3°Cat760mmHg
  • Molecular Weight 328.326
  • Flash Point 211°C
  • Transport Information
  • Appearance
  • Safety Poison by ingestion, skin contact, intraperitoneal, and subcutaneous routes. When heated to decomposition it emits toxic fumes of POx and SOx. See also PARATHION.
  • Risk Codes 26/27/28-50/53
  • Molecular Structure Molecular Structure of 299-45-6 (POTASAN)
  • Hazard Symbols Toxic by ingestion, cholinesterase inhibitor.
  • Synonyms Coumarin,7-hydroxy-4-methyl-, O-ester with O,O-diethyl phosphorothioate (7CI,8CI);Umbelliferone, 4-methyl-, O,O-diethyl phosphorothioate (6CI);4-Methyl-7-hydroxycoumarin diethoxythiophosphate; 4-MethylumbelliferoneO,O-diethyl thiophosphate; 7-Hydroxy-4-methylcoumarin diethoxythiophosphoricacid ester; Diethyl (4-methylumbelliferyl) thionophosphate; Diethylmethylcoumarinyl thiophosphate; E 838; O,O-Diethyl O-(2-keto-4-methyl-7-a',b'-benzo-a'-pyranyl) thiophosphate; O,O-Diethyl O-(4-methyl-7-coumarinyl)phosphorothioate; O,O-Diethyl O-(4-methylumbelliferone) phosphorothioate; Potasan;Potasan-G-liquid
  • PSA 99.80000
  • LogP 4.42830

Potasan Chemical Properties

Product Name: Potasan (CAS NO.299-45-6)


Molecular Formula: C14H17O5PS
Molecular Weight: 328.32g/mol
Mol File: 299-45-6.mol
Boiling point: 425.3 °C at 760 mmHg
Flash Point: 211 °C
Density: 1.295 g/cm3
Surface Tension: 50.1 dyne/cm
Enthalpy of Vaporization: 67.99 kJ/mol
Vapour Pressure: 1.93E-07 mmHg at 25°C
Structure Descriptors of Potasan (CAS NO.299-45-6):
  InChI : InChI=1/C14H17O5PS/c1-4-16-20(21,17-5-2)19-11-6-7-12-10(3)8-14(15)18-13(12)9-11/h6-9H,4-5H2,1-3H3    
  Smiles: c1=2c(ccc(c1)OP(OCC)(OCC)=S)=C(C=C(O2)=O)C

Potasan Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 oral 25mg/kg (25mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 105, Pg. 156, 1952.
mouse LD50 oral 99mg/kg (99mg/kg)   Journal of Pharmacology and Experimental Therapeutics. Vol. 105, Pg. 156, 1952.
mouse LD50 subcutaneous 25mg/kg (25mg/kg)   Pharmacological Reviews. Vol. 11, Pg. 636, 1959.
rabbit LD50 skin 300mg/kg (300mg/kg)   World Review of Pest Control. Vol. 9, Pg. 119, 1970.
rat LD50 intraperitoneal 15mg/kg (15mg/kg)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 6, Pg. 9, 1952.
rat LD50 oral 14700ug/kg (14.7mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1169, 1986.
rat LD50 unreported 19mg/kg (19mg/kg)   "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971Vol. -, Pg. 340, 1971.

Potasan Safety Profile

Poison by ingestion, skin contact, intraperitoneal, and subcutaneous routes. When heated to decomposition it emits toxic fumes of POx and SOx. See also PARATHION.
Safety Information of Potasan (CAS NO.299-45-6):
Hazard Codes: T+Very,NDangerous
Risk Statements: 26/27/28-50/53 
26:  Very Toxic by inhalation 
27:  Very Toxic in contact with skin 
28:  Very Toxic if swallowed 
50:  Very Toxic to aquatic organisms 
53:  May cause long-term adverse effects in the aquatic environment 
Safety Statements: 13-28-45-60-61
13:  Keep away from food, drink and animal feeding stuffs 
28:  After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
60:  This material and/or its container must be disposed of as hazardous waste 
61:  Avoid release to the environment. Refer to special instructions safety data sheet 

Potasan Specification

 Potasan ,its CAS NO. is 299-45-6,the synonyms is 4-18-00-00343 (Beilstein Handbook Reference) ; 4-Methyl-7-hydroxycoumarin diethoxythiophosphate ; 4-Methylumbelliferone-O,O-diethyl thiophosphate ; 7-Hydroxy-4-methylcoumarin, O,O-diethyl thiophosphoric acid ester ; 7-Hydroxy-4-methylcoumarin, O-ester with O,O-diethyl phosphorothioate ; Diethoxy thiophosphoric acid ester of 7-hydroxy-4-methyl coumarin ; Diethyl (4-methylumbelliferyl) thionophosphate ; Diethyl methylcoumarinyl thiophosphate ; Farbenfabriken bayer ; Hymecromone O,O-diethyl phosphorothioate ; O,O-Diaethyl-O-(4-methyl-coumarin-7-yl)-monothiophosphat ; O,O-Diethyl O-(2-keto-4-methyl-7-alpha',beta'-benzo-alpha'-pyranyl) thiophosphate ; O,O-Diethyl O-(4-methyl-7-coumarinyl) phosphorothioate ; O,O-Diethyl O-(4-methylumbelliferone) ester of thiophosphoric acid ; O,O-Diethyl-O-(4-methyl-7-kumarinyl) ester kyseliny thiofosforescne ; O,O-Diethyl-O-(4-methylcoumarin-7-yl)-monothiofosfaat ; O,O-Dietil-O-(4-metilcumarin-7-il)-monotiofosfato ; O,O-Dietyl-O-4-methylkumarinyl(7)tiofosfat ; Phosphorothioic acid, O,O-diethyl ester, O-ester with 7-hydroxy-4-methylcoumarin ; Potasan-G-liquid ; Thiophosphate de O,O-diethyle et de O-(4-methyl-7-coumarinyle) .

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