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301-13-3

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Basic Information
CAS No.: 301-13-3
Name: PHOSPHOROUS ACID TRIS(2-ETHYLHEXYL) ESTER
Molecular Structure:
Molecular Structure of 301-13-3 (PHOSPHOROUS ACID TRIS(2-ETHYLHEXYL) ESTER)
Formula: C24H51 O3 P
Molecular Weight: 418.641
Synonyms: 1-Hexanol,2-ethyl-, phosphite (3:1) (7CI); 1-Hexanol, 2-ethyl-, phosphite (6CI); JP 308;JP 308E; NSC 3233; Tris(2-ethylhexyl) phosphite
Density: g/cm3
Boiling Point: 446.7°Cat760mmHg
Flash Point: 278.6°C
Risk Codes: 36/37/38
Safety: Slightly toxic by ingestion and inhalation. When heated to decomposition it emits toxic vapors of POx.
PSA: 41.28000
LogP: 8.91230
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Chemistry

Product Name: Tri-(2-ethylhexyl)phosphite (CAS NO.301-13-3)


Molecular Formula: C24H51O3P
Molecular Weight: 418.63g/mol
Mol File: 301-13-3.mol
Einecs: 206-111-2
Appearance: Clear colorless liquid
Boiling point:  446.7 °C at 760 mmHg
Flash Point: 278.6 °C
Water Solubility: Insoluble in water
Stability: Stable. Combustible. Incompatible with strong oxidizing agents
Enthalpy of Vaporization: 67.78 kJ/mol
Vapour Pressure: 9.37E-08 mmHg at 25°C
XLogP3-AA: 9.5
H-Bond Donor: 0
H-Bond Acceptor: 3

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mammal (species unspecified) LC inhalation > 27500ug/m3 (27.5mg/m3)   Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 25(12), Pg. 51, 1981.
mouse LD50 oral 7600mg/kg (7600mg/kg) AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: TREMOR		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 25(12), Pg. 51, 1981.
rabbit LD50 oral 8500mg/kg (8500mg/kg) AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: TREMOR		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 25(12), Pg. 51, 1981.
rabbit LD50 skin > 5gm/kg (5000mg/kg)   Albright & Wilson Inc. Vol. #OPB-3, Pg. 1984,
rat LC50 inhalation > 20gm/m3 (20000mg/m3)   Albright & Wilson Inc. Vol. #OPB-3, Pg. 1984,
rat LD50 oral 6200mg/kg (6200mg/kg) AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC

BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: TREMOR		 Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 25(12), Pg. 51, 1981.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Slightly toxic by ingestion and inhalation. When heated to decomposition it emits toxic vapors of POx.
Safety Information of Tri-(2-ethylhexyl)phosphite (CAS NO.301-13-3):
Risk Statements: 36/37/38 
36:  Irritating to the eyes 
37:  Irritating to the respiratory system 
38:  Irritating to the skin 
Safety Statements: 26-36/37/39
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing  
37:  Wear suitable gloves 
39:  Wear eye/face protection 

Specification

 Tri-(2-ethylhexyl)phosphite ,its CAS NO. is 301-13-3,the synonyms is 2-Ethyl-1-hexanol phosphite ; 2-Ethyl-1-hexanol triphosphite ; Phosphorous acid trioctyl ester ; Phosphorous acid tris(2-ethylhexyl) ester ; Trioctyl phosphite ; Tris(2-ethylhexyl) phosphite ; 2-Ethyl-1-hexanophosphite .