Introduction to dipropylene glycol
Dipropylene glycol generally refers to 4-oxa-2, 6-heptanediol, that is, di (2-hydroxypropyl) ether (two 1-hydroxyl groups of two molecules of 1, 2-propylene glycol condensation). It may also refer to:
4-oxa-1, 7-heptanediol (condensation of two hydroxyl groups of 1, 3-propylene glycol);
Bis (1-methyl-hydroxyethyl) ethers (condensation of two 2-hydroxyl groups of two molecules of 1, 2-propylene glycol);
2-(2-hydroxy-propoxy) -1-propanol (condensation of a 1-hydroxyl group of two molecules, 1, 2-propanediol with a 2-hydroxyl group).
use
Used in the manufacture of polyester resin. It is used as the solvent of cellulose acetate, cellulose nitrate, shellac varnish, castor oil, the component of fiber lubricant, and the preparation of plasticizer, fumigant, synthetic detergent, etc. In addition, dipropylene glycol can be used alone or in combination with diethylene glycol to extract aromatic hydrocarbons from hydrocarbons.
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Express: FedEx, UPS, EMS, DHL, USPS, TNT, DPD, Aramex etc
Our way of shipping the products is universal and secure.
The company name and other contents related to pharmacy are not written on the package slips.
The way of packing is regularly changed for a secure delivery.
The packages are small in order to avoid unwelcomed questions . If the order is big, then it will be divided into two or more packages
Can the packages be trackable?
YES, we provide tracking number and you can track on internet.
Do you offer domestic shipping/remail shipping?
Yes we can ship to USA/UK/Canada/Australia/Germany etc warehouse first then to you.
Do you ensure your packing , what about customs, what happens if the package is retained?
We concern a lot about our safety system, we pack the orders as secure as possible. If a package is seized at customs, reships of seized orders will be done provided you have a copy of the letter to show us. If you receive a seizure letter, please contact us immediately with a scanned copy of the seizure letter, and also a new address to have your order reshipped to.
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Worldwide.
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