NSC 36549

Base Information

• Chemical Name: NSC 36549
• CAS No.: 6935-99-5
• Molecular Formula: C11H14N2O4
• Molecular Weight: 238.243
• Hs Code.: 2924299090
• Mol file: 6935-99-5.mol

Synonyms:dimethyl 4-methyl-1,3-phenylenediurethane;dimethyl 2,4-toluenedicarbamate;2,4-dimethoxy-carbonyl-aminotoluene;

Chemical Property of NSC 36549

Chemical Property:

• Vapor Pressure: 0.00644mmHg at 25°C
• Boiling Point: 271.5°C at 760 mmHg
• Flash Point: 118°C
• PSA: 76.66000
• Density: 1.29g/cm³
• LogP: 2.49760
• Storage Temp.: 2-8°C

Purity/Quality:

≥98% ^*data from raw suppliers

ObtucarbamateA 95+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of NSC 36549

There total 38 articles about NSC 36549 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 98.0%

methanol (67-56-1) + 2,4-Toluene diisocyanate (584-84-9,6144-18-9,26006-20-2) → 2,4-bis(methoxycarbonylamino)toluene (6935-99-5)

Guidance literature:

for 36h; Heating;

DOI:10.1016/0584-8539(94)80158-4

Reference yield: 98.0%

4-methylbenzene-1,3-diamine (95-80-7,71111-07-4) + carbonic acid dimethyl ester (616-38-6) → 2,4-bis(methoxycarbonylamino)toluene (6935-99-5)

Guidance literature:

Zn₄O(OAc)6; at 190 ℃; for 3h; Autoclave; Inert atmosphere;

Reference yield: 92.6%

methanol (67-56-1) + carbon monoxide (201230-82-2) + 2,4-dinitrotoluene (121-14-2) + 4-methylbenzene-1,3-diamine (95-80-7,71111-07-4) → 2,4-bis(methoxycarbonylamino)toluene (6935-99-5)

Guidance literature:

N,N'-bis(salicylidene)-1,2-phenylene-diaminocobalt(II); toluene-4-sulfonic acid; at 170 - 200 ℃; for 6.08333h; under 37503.8 Torr;

upstream raw materials:

methanol

(3-isocyanato-4-methyl-phenyl)-carbamic acid methyl ester

2,4-Toluene diisocyanate

carbon monoxide

Downstream raw materials:

2,4-Toluene diisocyanate

dimethyl (4-methyl-1,3-phenylene)bis(methylcarbamate)

4-methyl-1,3-phenylenedi(carbamic acid(3-methylbutyl)ester)

1-methyl-2,4-bis-(butoxycarbonylamino)-benzene

Refernces

Consideration of roles of commercial TiO₂ pigments in aromatic polyurethane coating via the photodegradation of dimethyl toluene-2,4-dicarbamate in non-aqueous solution

10.1007/s11164-014-1859-3

The research investigates the photochemical behavior of commercial TiO2 pigments in aromatic polyurethane coatings by studying the photodegradation of dimethyl toluene-2,4-dicarbamate (2,4-TDC) in a non-aqueous solution. The study finds that rutile TiO2 pigment has better UV-shielding ability and retards the photodegradation of 2,4-TDC, while anatase TiO2 pigment accelerates the process. The photodegradation mechanism of 2,4-TDC is elucidated through the identification of degradation intermediates and theoretical calculations, involving the addition of hydroxyl radicals and the cleavage of the carbamate side chain. The study concludes that rutile TiO2 can act as a UV stabilizer for polyurethane coatings, whereas anatase TiO2 primarily functions as a photosensitizer, causing more degradation. This research provides valuable insights into the roles of different TiO2 pigments in polyurethane coatings and their potential applications in industry.