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18771-38-5

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Basic Information
CAS No.: 18771-38-5
Name: [bis(ethylsulfanyl)methylidene]propanedinitrile
Article Data: 10
Molecular Structure:
Molecular Structure of 18771-38-5 ([bis(ethylsulfanyl)methylidene]propanedinitrile)
Formula: C8H10N2S2
Molecular Weight: 198.313
Density: 1.176g/cm3
Boiling Point: 282.2°Cat760mmHg
Flash Point: 124.4°C
Hazard Symbols: A poison by ingestion and skin contact. A severe eye irritant.
Safety: A poison by ingestion and skin contact. A severe eye irritant. When heated to decomposition it emits toxic vapors of NOx and SOx.
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Chemistry

IUPAC Name: 2-[bis(ethylsulfanyl)methylidene]propanedinitrile
Synonyms of Bis(ethylthio)methylene malononitrile (CAS NO.18771-38-5): (Bis(ethylthio)methylene)propanedinitrile ; CP 26890 ; Malononitrile, carbonyl-, diethyl mercaptole (8CI) ; Propanedinitrile, (bis(ethylthio)methylene)- 
CAS NO: 18771-38-5 
Molecular Formula of Bis(ethylthio)methylene malononitrile (CAS NO.18771-38-5): C8H10N2S2
Molecular Weight: 198.3084 
H bond acceptors: 2
H bond donors: 0
Freely Rotating Bonds: 4
Polar Surface Area: 98.18 Å2
Index of Refraction: 1.562
Molar Refractivity: 54.67 cm3
Molar Volume: 168.5 cm3
Surface Tension: 49.9 dyne/cm
Density of Bis(ethylthio)methylene malononitrile (CAS NO.18771-38-5): 1.176 g/cm3
Flash Point: 124.4 °C
Enthalpy of Vaporization: 52.1 kJ/mol
Boiling Point: 282.2 °C at 760 mmHg
Vapour Pressure: 0.00341 mmHg at 25°C
Molecular Structure:

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rabbit LDLo skin 31600ug/kg (31.6mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: MUSCLE WEAKNESS

LIVER: CHANGE IN GALL BLADDER STRUCTURE OR FUNCTION		 National Technical Information Service. Vol. OTS0539975,
rat LD50 oral 780mg/kg (780mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: MUSCLE WEAKNESS

LIVER: CHANGE IN GALL BLADDER STRUCTURE OR FUNCTION		 National Technical Information Service. Vol. OTS0539975,

Safety Profile

A poison by ingestion and skin contact. A severe eye irritant. When heated to decomposition it emits toxic vapors of NOx and SOx.