4538-42-5

Basic information

• Product Name: Pentane, 1,5-diisocyanato-
• CAS NO: 4538-42-5
• Molecular Formula: C7H10N2O2
• Molecular Weight: 154.169
• Mol File: 4538-42-5.mol
• Article Data: 14

Chemical Properties

• CAS DataBase Reference: Pentane, 1,5-diisocyanato-(CAS DataBase Reference)
• NIST Chemistry Reference: Pentane, 1,5-diisocyanato-(4538-42-5)
• EPA Substance Registry System: Pentane, 1,5-diisocyanato-(4538-42-5)

Safety Data

• Hazardous Substances Data: 4538-42-5(Hazardous Substances Data)

Usage

General Description

Pentane, 1,5-diisocyanato- is an organic compound with the chemical formula C8H12N2O2. It is a diisocyanate, which means it has two isocyanate functional groups. These functional groups make it an important building block for the production of polyurethane plastics and foams. It is commonly used in the production of synthetic fibers, coatings, adhesives, and elastomers. However, it is also a hazardous chemical and can cause irritation to the skin, eyes, and respiratory system. Proper safety measures and handling procedures are necessary when working with pentane, 1,5-diisocyanato- to prevent exposure and potential health risks.

Upstream product

• 111-16-0 heptanedioic acid 
• 78149-92-5 1,5-Bis-carbamoyloxy-pentan 
• 112343-33-6 pentamethylene-1,5-di(methyl carbamate) 
• 1138160-85-6 bis(butoxycarbonylamino)pentane 
• 75-44-5 phosgene 
• 462-94-2 1,5-diaminopentane 
• 32315-10-9 bis(trichloromethyl) carbonate 
• 124-38-9 carbon dioxide 
• 657-27-2 L-Lysine hydrochloride 
• 24424-95-1 di-tert-butyl tricarbonate 
• 70980-63-1 N,N’-(pentane-1,5-diyl)diformamide 
• 64624-45-9 heptanedioyl azide 
• 628-77-3 1,5-diiodopentane 
• 3315-16-0 silver cyanate 

Downstream Products

• 4685-15-8 N,N'-bis-(aziridine-1-carbonyl)-pentanediyldiamine 
• 117688-67-2 C₄₁H₇₂N₈O₄ 
• 57-13-6 urea 

Relevant articles and documents

Preparation method of 1, 5-pentamethylene diisocyanate

The invention provides a preparation method of 1, 5-pentamethylene diisocyanate, which comprises the following steps: (1) mixing 1, 5-pentamethylene diamine, a carbonylation agent, a first solvent and a catalyst, carrying out carbonylation reaction, and carrying out solid-liquid separation to obtain a 1, 5-pentamethylene dicarbamate reaction solution; and (2) carrying out purification treatment on the 1, 5-pentamethylene dicarbamate reaction solution obtained in the step (1), mixing the purified 1, 5-pentamethylene dicarbamate with a second solvent, and carrying out pyrolytic reaction to obtain the 1, 5-pentamethylene diisocyanate. The preparation method has the advantages of mild reaction conditions, simple operation, no pollution, small potential safety hazard, and high yield and purity of the intermediate product PDC and the final product PDI.

METHOD FOR PRODUCING CARBAMATE AND METHOD FOR PRODUCING ISOCYANATE

The present invention provides a method for producing a carbamate that includes a step (1) and a step (2) described below: (1) a step of producing a compound (A) having a urea linkage, using an organic primary amine having at least one primary amino group per molecule and at least one compound selected from among carbon dioxide and carbonic acid derivatives, at a temperature lower than the thermal dissociation temperature of the urea linkage; and(2) a step of reacting the compound (A) with a carbonate ester to produce a carbamate.

METHOD FOR PRODUCING PENTAMETHYLENE DIISOCYANATE

PROBLEM TO BE SOLVED: To provide a method for producing pentamethylene diisocyanate which can suppress decrease in flowability of a salt-forming mixture containing pentamethylenediamine hydrochloride in a salt-forming step and suppress adhesion of pentamethylenediamine hydrochloride to a stirring vessel. SOLUTION: There is obtained pentamethylene diisocyanate by preparing an amine raw material containing pentamethylenediamine in which the content ratio of ethanolamine is 0.10 mass% or less, mixing the amine raw material and hydrogen chloride to obtain pentamethylenediamine hydrochloride, followed by reacting the pentamethylenediamine hydrochloride and carbonyl chloride. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2018,JPOandINPIT