427888

Polypropylene

Isotactic, average M_w ~250,000, average M_n ~67,000

• Synonym(s): PP, polypropene
• Linear Formula: [CH₂CH(CH₃)]_n
• CAS Number: 9003-07-0
• MDL number: MFCD00084447
• UNSPSC Code: 12162002
• PubChem Substance ID: 24866786
• NACRES: NA.23

Properties

• Quality Level: 100
• form: beads
• melt index: 12 g/10 min (230°C/2.16kg)
• mol wt: average M_n ~67,000; average M_w ~250,000
• hardness: 100 (Rockwell R, ASTM D 785-A)
• transition temp: T_m 160-165 °C
• density: 0.9 g/mL at 25 °C (lit.)
• application(s): battery manufacturing
• SMILES string: CC=C
• InChI: 1S/C22H42O3/c1-2-3-4-5-11-14-17-20-21(25-20)18-15-12-9-7-6-8-10-13-16-19-22(23)24/h20-21H,2-19H2,1H3,(H,23,24)/t20-,21+/m1/s1
• InChI key: NSYDMBURIUSUDH-RTWAWAEBSA-N

Description

Application

Used with ram- and screw-injection machines. For automotive, housewares, general molding products and multi- and monofiliment fiber.

Features and Benefits

High stiffness and resistance to solvents and chemicals. Resistant to environmental stress cracking. More prone to oxidation than polyethylene.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves