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66455-31-0

Basic Information
CAS No.: 66455-31-0
Name: PARAFORMALDEHYDE
Molecular Structure:
Molecular Structure of 66455-31-0 (PARAFORMALDEHYDE)
Formula: C3H6O3X2
Molecular Weight: 146.1412
Synonyms: Acetalresins;Bolrin;Celcon;Debrin;Duracon White;Metaformaldehyde;Plastics, polyacetals;Plastics, polyoxyalkylenes;Poly(methylene oxide);Polyacetals;Polyformaldehyde A;Polyformals;Polyoxyalkylenes, polyoxymethylenes;Polyoxymethylene ethers;Trioxymethylenepolymers;
EINECS: 200-001-8
Density: 1.42 g/mL at 25 °C
Melting Point: 172-184℃
Boiling Point: 238.1°Cat760mmHg
Flash Point: 158 °F
Solubility: soluble in chlorophenol above 70°C
Appearance: white pellets
Hazard Symbols: HarmfulXn
Risk Codes: 31
Safety: 36
Transport Information: UN 2213 4.1/PG 3
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Specification

The Polyoxymethylenes is a kind of linear polyoxymethylene type acetal resin which is made by polymerization of formaldehyde. It is mainly used for the production of seals, gears, bearings, valves and other mechanical parts. As a chemical, it is also known as Polyformaldehyde, copolymer; Delrin. Its cas registry number is 66455-31-0. Besides, it also has other registry numbers which include 11098-35-4, 39423-33-1, 39434-47-4, 55799-51-4, 69345-92-2, 69345-93-3, 895131-80-3, 9085-38-5, 91593-91-8. Its EINECS registry number is 200-001-8. With appearance of white pellets, this chemical is soluble in chlorophenol above 70°C. Its molecular formula is unspecified. This chemical belongs to classification codes of TSCA Flag XU [Exempt from reporting under the Inventory Update Rule], TSCA UVCB.

Physical properties about this chemical are: (1)Melting Point: 175 °C; (2)Density: 1.42 g/mL at 25 °C; (3)Vapor Density: 1.03 (vs air); (4)Vapor Pressure: <1.45 mm Hg ( 25 °C); (5)Flash Point: 158 °F.

When you are using this chemical, please be cautious about it as the following:
If this chemical contacts with acids, it will liberate toxic gas. So, when you are using it, make sure wear suitable protective clothing.