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What purpose does the addition of a few drops of water serve in the procedure for the synthesis of polyurethane?
"Water reacts with the toluene diisocyanate to produce carbon dioxide gas bubbles that expand the polyurethane as it polymerizes. "
What is the Hs code for antennas?
Based on your product description, the HS code for your antennas is 85291. However, if the antennas are part of a machine or mechanical appliance (such as transmission equipment), they may be classified under another code. If you provide additional product details, we can provide an HS code with more certainty.This HS classification was performed by 3CEonline.com.
Hs code for transceiver?
You can refer to 8525.60 or 8517.18.
What is the HS Code of low density polyethylene?
3901.10.0000
What is the pH of toluene?
What is the pH of toluene?
Are there any isomers of toluene?
Yes. Two isomers of toluene are known as toluene-2,4-diisocyanate and toluene-2,6-diisocyanate
Are toluene diisocyanate and hexamethylene diisocyanate hazardous air pollutants or haps as per the us-epa?
Yes
What has the author Howard E Momberg written?
Howard E. Momberg has written: 'A comparison of two methods for the determination of toluene diisocyanate in air' -- subject(s): Toluene 2,4-Diisocyanate, Analysis
What is HS code for a computer motherboard?
hs code for motherboard
What is the HS code for salt?
This HS code is 2501.00 for US.
What purpose does the addition of a few drops of water serve in the procedure for the synthesis of polyurethane?
"Water reacts with the toluene diisocyanate to produce carbon dioxide gas bubbles that expand the polyurethane as it polymerizes. "
Hs code spray booth BTD 7500?
Based on your description, the HS code for your Spray Booth is 940600. HS code was provided by 3CEonline.
What is the manufacturing method of foam?
Most foam is made from polyurethane.They start by making polyurethane. To make it, you mix a polyol with a diisocyanate. There are many polyols. There are two important isocyanates, toluene diisocyanate and methylene diisocyanate. (Two other diisocyanates are used to make urethane paint.) The choice of polyol governs whether the foam is hard or soft, and how soft or hard it is.Next, you mix in a blowing agent. The first blowing agent was water, which forms CO2 in contact with diisocyanate. They don't like making insulating foam with water, because the foam doesn't insulate as well.
What is the method of manufacture?
Most foam is made from polyurethane.They start by making polyurethane. To make it, you mix a polyol with a diisocyanate. There are many polyols. There are two important isocyanates, toluene diisocyanate and methylene diisocyanate. (Two other diisocyanates are used to make urethane paint.) The choice of polyol governs whether the foam is hard or soft, and how soft or hard it is.Next, you mix in a blowing agent. The first blowing agent was water, which forms CO2 in contact with diisocyanate. They don't like making insulating foam with water, because the foam doesn't insulate as well.
What is HS code for docking station?
Hs code of monitor docking station .84572090
methylene diphenyl diisocyanate manufacturing process?
Methylene diphenyl diisocyanate, often abbreviated as MDI, is known as an aromatic diisocyanate.
WHAT is the Polypropylene hs code?
Based on your product description, the HS code for polypropylene is 390210.
