CHEMICAL SPECIFICATIONS

CHEMICAL NAMES

Polybenzimidazole,
ABPBI poly (2,5-benzimidazole)

Molecular Formula

-(C7H4N2)n-

CAS REGISTRY NUMBER

25928-81-8

PHYSICAL PROPERIES

PHYSICAL STATE

Solid

APPEARANCE

Black

ODOR

Odorless

FREEZING/MELTING POINT

None

SOLUBILITY

Insoluble in H20

SPECIFIC GRAVITY/DENSITY

1.28-1.33

Polybenzimidazole

Uses and Applications

PolyBenzImidazole (PBI) is a polymer with extremely high temperature stability (it has no melting point and also does not ignite) and high chemical resistance, which can be made into a fiber with excellent textile and tactile performance. Due to its exceptional thermal and chemical stability, it is often used by fire departments and space agencies. Recently, PBI has received much attention for its use as a high temperature fuel cell membrane.

Polybenzimidazole