CAS 25014-41-9 Polyacrylonitrile - Materials / Alfa Chemistry

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Polyacrylonitrile

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Catalog Number

ACM25014419-5

CAS Number

25014-41-9

Product Name

Polyacrylonitrile

Structure

Category

Hydrophobic Polymers; Polymers

Synonyms

Vinyl cyanide

Description

PAN molecule has strong polar nitrile groups.It is relatively insoluble in nature. PAN based carbon fibers possess very high strength compared to other polymeric precursors. When subjected to heat treatment, it can produce high carbon yield giving rise to thermally stable, highly oriented, graphite like molecular structure. Generating carbon-fiber from PAN based fiber is a combination of three processes-- namely stabilization, carbonization and graphitization.

IUPAC Name

prop-2-enenitrile

Molecular Weight

average Mw 150,000 (Typical)

Molecular Formula

(C3H3N)n

Canonical SMILES

C=CC#N

InChI

InChI=1S/C3H3N/c1-2-3-4/h2H,1H2

InChI Key

NLHHRLWOUZZQLW-UHFFFAOYSA-N

Boiling Point

171 °F at 760 mm Hg (EPA, 1998);77.3 °C;77.2 °C;77 °C;171°F;171°F

Melting Point

-116 °F (EPA, 1998);-83.5 °C;-83.51 °C;-84 °C;-116°F;-116°F

Flash Point

32 °F (EPA, 1998);-5 °C (23 °F) - closed cup;32 °F(0 °C)(open cup);-1 °C c.c.;30°F;30°F

Density

1.184 g/mL at 25 °C (lit.)

Solubility

10 to 50 mg/mL at 70.9° F (NTP, 1992);1.40 M;In water, 7.45X10+4 mg/L at 25 °C;Very soluble in ethanol, acetone, benzene, ether;Acrylonitrile is ... miscible with ethanol, carbon tetrachloride, ethyl acetate, ethylene cyanohydrin, liquid carbon dioxide, ... toluene, petroleum ether, and xylene.;SOL IN DIMETHYLSULFOXIDE, DIMETHYLACETAMIDE, DIMETHYLFORMAMIDE;SOL IN MALEIC ANHYDRIDE, NITRILES, NITROPHENOLS, ETHYLENE CARBONATE, HOT BUTYROLACTONE; INSOL IN ALC, ACETONE, BENZENE, CARBON TETRACHLORIDE, PETROLEUM ETHER;Solubility in water, g/100ml at 20 °C: 7;7%

Application

Polyacrylonitrile (PAN) is used as polymeric carbon precursor to form carbon fibers, electrospun activated carbon materials having meso-macro pores, carbon black additives.These are consecutively used in hydrogen storage, EMI shielding, electrochemistry, separation processes. It may find s in PAN based single walled carbon nanotube composites.

Color/Form

Clear, colorless liquid at room temperature;Colorless to pale-yellow liquid;WHITE FIBER

Complexity

54.9

Corrosivity

Attacks copper and copper alloys ... attacks aluminum in high concentration

Covalently-Bonded Unit Count

EC Number

203-466-5;613-396-0

Exact Mass

53.026549g/mol

Features And Benefits

This product has good hydrophobicity to meet your specific application needs

Formal Charge

Heat of Vaporization

32.6 kJ/mol at 25 °C

Heavy Atom Count

ICSC Number

0092

Log P

0.25 (LogP);log Kow = 0.25;0.25

MDL Number

MFCD00084395

MeSH Entry Terms

Acrylonitrile;Cyanide, Vinyl;Vinyl Cyanide

Monoisotopic Mass

53.026549g/mol

NSC Number

7763;6362

Odor

Practically odorless, or with a very slight odor of peach kernels;Sweet odor;Irritating odor;Unpleasant odor;Onion, garlic, pungent

Other Experimental

... Yellowing upon exposure to light indicates photo-alteration to saturated derivatives.;Solubility of water in acrylonitrile: 3.1 parts water/100 parts acrylonitrile;Saturated concentration in air = 257 g/cu m at 20 °C; 383 g/cu m at 30 °C;Dielectric constant at 33.5 MHz = 38; dipole moment = 3.88 D; molar heat of fusion = 66.15 kJ/mol; ionization potential = 10.75 eV; free energy of formation = 195 kJ/mol at 25 °C; enthalpy of formation (at 25 °C): 185 kJ/mol (gas), 150 kJ/mol (liquid); molar heat capacity: 111.1 kJ/mol K (liquid), 64.1 kJ/mol K (gas at 50 °C and 101.3 kPa); entropy (gas at 25 °C, 1 atm) = 274 kJ/mol K;Forms azeotropes with tetrachlorosilane, water, isopropyl alcohol, benzene, methanol, carbon tetrachloride, chlorotrimethylsilane.;Henry's Law constant = 1.38X10-4 atm cu m/mole at 25 °C;Hydroxyl radical reaction rate constant = 1.11X10-11 cu cm/molecule-sec at 25 °C;STICKS @ 235 °C; IRONING TEMP ABOVE 160 °C MAY CAUSE YELLOWING;TENSILE STRENGTH (PSI) 32,000-39,000; BREAK ELONGATION 20-80%; MOISTURE REGAIN 1.5% (70 °F, 65% RH); SOFTENS @ 455 °F; RESISTANT TO MINERAL ACIDS; FAIR TO GOOD RESISTANCE TO WEAK ALKALIES;EXCELLENT RESISTANCE TO COMMON SOLVENTS, OILS, GREASES, NEUTRAL SALTS, SUNLIGHT; ... IS DEGRADED BY STRONG ALKALIES. RESISTS ATTACK BY MOLDS, MILDEW, INSECTS.

Packaging

50, 100 g in poly bottle

Refractive Index

n20/D 1.514

Rotatable Bond Count

RTECS Number

AT5250000

Stability

Stable under recommended storage conditions.

Storage Temperature

2-8°C

UNII