Name: N-BUTYLTHIOUREA
SKU: 1516-32-1

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Basic Information

Molecular Structure:
CAS No.:	1516-32-1
Name:	N-BUTYLTHIOUREA
Article Data:	25

Formula:	C5H12 N2 S
Molecular Weight:	132.23
Synonyms:	Thiourea,butyl- (9CI); Urea, 1-butyl-2-thio- (6CI,7CI,8CI); 1-Butyl-2-thiourea;1-Butylthiourea; Butylthiourea; N-Butylthiourea; NSC 202953
Density:	1.028g/cm³
Melting Point:	77-78°C
Boiling Point:	202.2°Cat760mmHg
Flash Point:	76.1°C
Hazard Symbols:	R22:Harmful if swallowed.;
Risk Codes:	36/37/38
Safety:	A poison by intraperitoneal route. When heated to decomposition it emits very toxic fumes of NO_x and SO_x.
PSA:	70.14000
LogP:	1.71090

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Chemistry

IUPAC Name: Butylthiourea
Synonyms of n-Butyl thiourea (CAS NO.1516-32-1): 1-Butyl-2-thiourea ; N-Butylthiourea ; Butyl-2-thiourea ; Thiourea, N-butyl- ; Thiourea, butyl- ; Urea, 1-butyl-2-thio-
CAS NO: 1516-32-1
Molecular Formula: C₅H₁₂N₂S
Molecular Weight : 132.2272
Molecular Structure:
EINECS: 216-165-9
H bond acceptors: 2
H bond donors: 3
Freely Rotating Bonds: 3
Polar Surface Area: 38.57 Å²
Index of Refraction: 1.528
Molar Refractivity: 39.63 cm³
Molar Volume: 128.5 cm³
Surface Tension: 45.9 dyne/cm
Density: 1.028 g/cm³
Flash Point: 76.1 °C
Enthalpy of Vaporization: 43.84 kJ/mol
Boiling Point: 202.2 °C at 760 mmHg
Vapour Pressure: 0.296 mmHg at 25°C
Melting Point: 77-78°C

Toxicity Data With Reference

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	300mg/kg (300mg/kg)		National Technical Information Service. Vol. AD277-689,

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Risk Statements: 36/37/38
R36/37/38: N-Butyl thiourea (CAS NO.1516-32-1) is irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: 2811
RTECS: YS4375000
PackingGroup: III

A poison by intraperitoneal route. When N-Butyl thiourea (CAS NO.1516-32-1) is heated to decomposition ,it emits very toxic fumes of NO_x and SO_x.