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Key Documents

430323

Sigma-Aldrich

Poly(oxymethylene), acetate end-capped

melt index 6 g/10 min (190°C/1.05kg)

Synonym(s):

Acetal resin

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About This Item

Linear Formula:
CH3CO2(CH2O)nCOCH3
CAS Number:
UNSPSC Code:
12162002

form

pellets

melt index

6 g/10 min (190°C/1.05kg)

hardness

94 (Rockwell M, ASTM D 785)

mp

175 °C

solubility

chlorophenol: soluble at >70 °C

density

1.42 g/mL at 25 °C

SMILES string

[H]C([H])=O

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Application

Injection molded into gears, cams, plumbing components, ′sparkless′ chains and impellers.

Features and Benefits

Engineering thermoplastic, natural lubricity.
End-capped to minimize depolymerization. Resistant to neutral chemicals and a wide variety of solvents, sensitive to strong acids, alkalis and oxidizing agents. Antioxidants added. Noted for low coefficient of friction, stiffness, and fatigue and creep resistance.

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