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Tosyl isocyanate

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Tosyl isocyanate

EINECS 223-810-8
CAS No. 4083-64-1 Density 1.27 g/cm3
Solubility reacts with water Melting Point 5°C
Formula C8H7NO3S Boiling Point 288.8 °C at 760 mmHg
Molecular Weight 197.21 Flash Point 128.5 °C
Transport Information UN 2206 6.1/PG 3 Appearance clear liquid
Safety 26-28-30-28A Risk Codes 14-36/37/38-42
Molecular Structure Molecular Structure of 4083-64-1 (Isocyanicacid, anhydride with p-toluenesulfonic acid (6CI)) Hazard Symbols HarmfulXn

p-Toluenesulfonic acid,anhydride with isocyanic acid (7CI,8CI);4-Methylbenzenesulfonyl isocyanate;4-Methylphenylsulfonyl isocyanate;4-Toluenesulfonyl isocyanate;Additive TI;PTSI;p-Toluene sulphonyl isocyanate;p-Methylbenzenesulfonyl isocyanate;p-Methylphenylsulfonyl isocyanate;p-Toluenesulfonyl isocyanate;p-Tosyl isocyanate;


Tosyl isocyanate Chemical Properties

IUPAC Name: 4-Methyl-N-(oxomethylidene)benzenesulfonamide
Synonyms of p-Toluene sulphonyl isocyanate (CAS NO.4083-64-1): EINECS 223-810-8 ; Benzenesulfonyl isocyanate, 4-methyl- ; p-Toluenesulphonyl isocyanate ; p-Toluenesulfonic acid, anhydride with isocyanic acid
CAS NO: 4083-64-1
Molecular Formula: C8H7NO3S
Molecular Weight: 197.2111 
Molecular Structure:

Melting Point: 5°C
Product Categories: Benzene derivatives ; Benzene derivates ; Sulfur Compounds (for Synthesis) ; Synthetic Organic Chemistry
Polar Surface Area: 71.95 Å2
Index of Refraction: 1.566
Molar Refractivity: 50.33 cm3
Molar Volume: 154.2 cm3
Surface Tension: 48.7 dyne/cm
Density: 1.27 g/cm3
Flash Point: 128.5 °C
Enthalpy of Vaporization: 50.69 kJ/mol
Boiling Point: 288.8 °C at 760 mmHg
Vapour Pressure: 0.00396 mmHg at 25°C

Tosyl isocyanate Uses

 p-Toluene sulphonyl isocyanate (CAS NO.4083-64-1) is used as a water scavenger in urethane products. End application include adhesives, coatings and sealants. It is also used as an intermediate in organic synthesis.

Tosyl isocyanate Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LC50 inhalation > 640ppm/1H (640ppm) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE

International Journal of Toxicology. Vol. 19, Pg. 368, 2000.
rat LD50 intraperitoneal 775mg/kg (775mg/kg) BEHAVIORAL: GENERAL ANESTHETIC International Journal of Toxicology. Vol. 19, Pg. 368, 2000.
rat LD50 oral 2234mg/kg (2234mg/kg) GASTROINTESTINAL: OTHER CHANGES International Journal of Toxicology. Vol. 19, Pg. 368, 2000.

Tosyl isocyanate Safety Profile

The Hazard Codes of p-Toluene sulphonyl isocyanate (CAS NO.4083-64-1):  Xn
The Risk Statements information: 
14:  Reacts violently with water 
42:  May cause sensitization by inhalation 
36/37/38:  Irritating to eyes, respiratory system and skin 
The Safety Statements information:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
28:  After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) 
30:  Never add water to this product 
RIDADR: UN 2206 6.1/PG 3
WGK Germany: 1
RTECS: DB9032000
F: 10
HazardClass:   6.1
PackingGroup:  III
Moderately toxic by ingestion and intraperitoneal routes. Low toxicity by inhalation. A mild skin and moderate eye irritant. When heated to decomposition it emits toxic vapors of NOx and SOx.

Tosyl isocyanate Standards and Recommendations

APPEARANCE: clear liquid
Assay (GC): 98.0% min
SUM IMPURITY: 2.0% max

Tosyl isocyanate Specification

PACKING: 200kgs in drum
HAZARD CLASS: 6.1 (Packing Group: II)
UN NO.: 2206

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