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Merck
CN

575771

Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution

12.0 wt. %±0.5 wt. % (80% NMP/20% xylene)

Synonym(s):

Pyre-M.L.® RK-692, Polyamic acid

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About This Item

Linear Formula:
(C12H12N2O .C10H2O6)x
NACRES:
NA.23
UNSPSC Code:
12162002
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form

viscous liquid

Quality Segment

feature

hydrophobic

concentration

12.0 wt. %±0.5 wt. % (80% NMP/20% xylene)

refractive index

n20/D 1.5052

solubility

H2O: miscible

density

1.03 g/mL at 25 °C (relative)

storage temp.

−20°C

General description

Poly(pyromellitic dianhydride-co-4,4′-oxydianiline), amic acid solution (PAA) converts to polyimide at 300oC. The FTIR spectra indicates a carbonyl stretch of carboxylic acids in PAA at 1650 cm-1. Following the imidization process, the peak at 1720cm-1 grows, indicating the formation of imide group.

Application

It is used as a precursor for polyimide coatings.
It may also be used as a precursor for the preparation of carbon hollow fiber membranes.

Legal Information

Pyre-M.L. is a registered trademark of Industrial Summit Technologies Corp.

Disclaimer

Supply conditions do not apply to the regions and states of Brazil: North, Northeast, Mato Grosso do Sul, Mato Grosso, and Rio Grande do Sul.


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Signal Word

Danger

Hazard Classifications

Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 1B - Skin Irrit. 2 - STOT RE 2 Inhalation - STOT SE 3

Target Organs

Central nervous system,Liver,Kidney, Respiratory system

Storage Class

3 - Flammable liquids

WGK

WGK 2

Flash Point (°F)

84.2 °F - closed cup

Flash Point (°C)

29 °C - closed cup

PPE (personal protective equipment)

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter



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