Oxirane, methyl-, polymer with oxirane, ether with 1,2,3-propanetriol grafted with styrene, acrylonitrile and allyl glycidyl ether, CAS # 58945-20-3
This graph illustrates the relationship of molecular weight to hydroxyl number and equivalent weight of a triol before grafting with styrene, acrylonitrile and allyl glycidyl ether. The vinyl polymer is in dispersed form, therefore the viscosity increase due to grafting is not proportional to MW, but is related to particle size and crowding of particles..


Regulatory Inventory
CAS REGISTRY NUMBER # 58945-20-3 NAME : 2-Propenenitrile, polymer with ethenylbenzene, methyloxirane, oxirane, 1,2,3-propanetriol and [(2-propenyloxy)methyl]oxirane
EINECS Europe   Yes
ENCS Japan   No
ECL Korea ECL Serial No. KE-29428 Yes
AICS Australia Yes
Other names: 
2-Propenenitrile polymer with ethenylbenzene, methyloxirane, oxirane, 1,2,3-propanetriol and [(2-propenyloxy)methyl]oxirane

Glycerin, propylene oxide, ethylene oxide, allyl glycidyl ether, acrylonitrile, styrene polymer

The fact that a compound is not listed under a specific CAS # in a countries inventory does not mean this compound cannot be used, it can be an exempt compound or a polymer which does not require listing, or it can be listed in a different category. Ask your supplier.
Commercial Products or generic terms used for products. For manufacturer see Polyether MFCT.
Most manufacturer use either MW or Hydroxyl number as a part of their code to identify products.

Color codes indicates what methods of identification was used.

Molecular weight
Hydroxyl number
Polymer polyols are being manufactured by a number of companies, the exact composition is normally not being disclosed. The producer of polyols generally identified these polyols as styrene or acrylonitrile modified. 
Some of these product names might not be commercial anymore, the product names still might be in old formulations

Last edited on:

July 06, 2006

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