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4-Methylphenyl isothiocyanate

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Name

4-Methylphenyl isothiocyanate

EINECS 210-745-5
CAS No. 622-59-3 Density 1.02 g/cm3
PSA 44.45000 LogP 2.72930
Solubility May decompose in water Melting Point 25-26 °C(lit.)
Formula C8H7NS Boiling Point 237 °C at 760 mmHg
Molecular Weight 149.216 Flash Point 100.5 °C
Transport Information UN 2811 Appearance Clear light yellow liquid after melting
Safety 22-26-36-45-36/37/39 Risk Codes 36/37/38-42-42/43-23/24/25
Molecular Structure Molecular Structure of 622-59-3 (4-Methylphenyl isothiocyanate) Hazard Symbols ToxicT,HarmfulXn
Synonyms

Isothiocyanicacid, p-tolyl ester (6CI,7CI,8CI);1-Isothiocyanato-4-methylbenzene;4-Methylphenyl isothiocyanate;4-Tolyl isothiocyanate;p-Methylphenylisothiocyanate;p-Tolyl isothiocyanate;

Article Data 163

4-Methylphenyl isothiocyanate Specification

The Benzene,1-isothiocyanato-4-methyl-, with the CAS registry number 622-59-3, is also known as 4-Methylphenyl isothiocyanate. Its EINECS number is 210-745-5. This chemical's molecular formula is C8H7NS and formula weight is 149.21. What's more, its IUPAC name is 1-isothiocyanato-4-methylbenzene. Its classification code is Drug /Therapeutic Agent.

Physical properties of Benzene,1-isothiocyanato-4-methyl- are: (1)ACD/LogP: 3.70; (2)# of Rule of 5 Violations: 0; (3)ACD/BCF (pH 5.5): 381.61; (4)ACD/KOC (pH 5.5): 2452.05; (5)#H bond acceptors: 1; (6)#H bond donors: 0; (7)#Freely Rotating Bonds: 1; (8)Polar Surface Area: 44.45 Å2; (9)Index of Refraction: 1.561; (10)Molar Refractivity: 47.05 cm3; (11)Molar Volume: 145.1 cm3; (12)Surface Tension: 33.6 dyne/cm; (13)Density: 1.02 g/cm3; (14)Flash Point: 100.5 °C; (15)Enthalpy of Vaporization: 45.46 kJ/mol; (16)Boiling Point: 237 °C at 760 mmHg; (17)Vapour Pressure: 0.0706 mmHg at 25°C.

Preparation: this chemical can be prepared by p-tolyl-dithiocarbamic acid methyl ester by heating. This reaction will need reagent sodium hydroxide and solvent toluene with the reaction time of 1.5 hours. The yield is about 90%.

Uses of Benzene,1-isothiocyanato-4-methyl-: it can be used to produce 1-pyridin-2-yl-3-p-tolyl-thiourea by heating. It will need solvent ethanol with the reaction time of 4 hours. The yield is about 98%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. It may cause sensitisation by inhalation and skin contact. It is toxic by inhalation, in contact with skin and if swallowed. You should not breathe dust. When using it, you must wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, you need rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CC1=CC=C(C=C1)N=C=S
(2)InChI: InChI=1S/C8H7NS/c1-7-2-4-8(5-3-7)9-6-10/h2-5H,1H3
(3)InChIKey: ABQKHKWXTUVKGF-UHFFFAOYSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LDLo intraperitoneal 150mg/kg (150mg/kg)   Arzneimittel-Forschung. Drug Research. Vol. 16, Pg. 870, 1966.
 

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