General Info
CAS Number: Molecular Formula: Molecular Weight: Classifications:	30525-89-4 Paraformaldehyde is made up of connected formaldehyde molecules. Each molecule has a molecular weight of 30.03. Aldehyde

Synonyms:
paraform; para; polyoxymethylene; polyoxymethane; formagene; metaformaldehyde

Description:
White prill with a strong, pungent characteristic "formaldehyde" odor.

Water solubility, grams/liter   Bulk density, grams per milliliter   Bulk density, pounds per cubic foot   Boiling point   Flash point (closed cup)   Freezing point

Prill 91-93% Dissolves slowly at 20°C 0.82 51 Emits formaldehyde gas when heated 70°C 120-170°C

Prill 95-97% Dissolves slowly at 20°C 0.82 51 Emits formaldehyde gas when heated 70°C 120-170°C

Product Uses
Paraformaldehyde is essentially a solid form of formaldehyde and therefore has the same uses as formaldehyde. For example paraformaldehyde reacts with either phenol, urea, melamine or resorcinol to produce resins used as binders in plywood and particleboard. Use of paraformaldehyde in resin production offers two major advantages as compared with aqueous formaldehyde: (1) more production from existing equipment and (2) less water (typically twenty fold less) to be removed from the reactor product.

Regulatory Numbers
Index Number: No number assigned. This product is not regulated under this code.
EINECS Number: No number assigned. This product is not regulated under this code.
UN Number: 2213

Manufacturing Sites
Region                                               City
North America                                  USA Bishop, TX}
Europe
Asia

Packaging
Bulk, Bags

Other Information
Structure

Paraformaldehyde is a formaldehyde polymer of relatively low molecular weight, made up of the following units:


These are terminated at one end with an OH group and at the other end with a hydrogen atom:


In this formula, n is typically in the range 6 to 100.

The paraformaldehyde molecule is therefore a long chain glycol, as in the following example where n = 8: