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Top Grade 99.90% N,N-Diethylformamide DEF CAS NO.: 617-84-5

DEF is a green environmentally friendly solvent, mainly used for photoresist cleaning of LCD, LED, OLED liquid crystal panels
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Product Name: N,N-Diethylformamide

CAS NO.: 617-84-5

Molecular formula: C5H11NO

Relative molecular weight: 101.15

Appearance: Colorless or light yellow transparent liquid, without visible impurities.

Properties: Toxic, flammable liquid with odor.

Boiling point: 176℃.

Relative density: 0.908g/cm3

Flash point: 60℃

Solubility: miscible with water, miscible with most organic solvents.


Usage:

DEF is a green environmentally friendly solvent, mainly used for photoresist cleaning of LCD, LED, OLED liquid crystal panels; high-end cleaning solvent for semiconductors; polyurethane synthetic leather, shoe material ink resin, water-based polyurethane resin solvent; lithium ion battery slurry solvent.


Characteristic

1.   Low toxicity: lower toxicity than DMF, DMAC, NMF, low volatility, low odor, comply with EU REACH ROSH.

2.   Strong solubility: Those DMF, DMAC, NMP, DMSO can dissolve, so do the DEF.

3.   Boiling point: 177°C, stable property.

4.   The water absorption is lower than DMF and DMAC.

5.   Easy to recycle and reuse

6.   It can replace the following solvents: DMF, DMAC, NMP, DMSO, THF, cyclohexanone, isophorone and so on.


Package and Storage:

180kg/plastic drum, the storage warehouse should be ventilated, away from open flames, high temperatures, and stored separately from oxidants and acids.


Item

Specification

N,N-Diethylformamide, w/%

≥99.90

Alcohol, w/%

≤0.003

Diethylamine, w/%

≤0.005

Impurities(ethyl-formamide)A, w/%

≤0.05(negotiable)

Hazen(Pt-Co),

≤5

Water, w/%

≤0.050

Fe, w/(mg/kg)

≤0.05

Acid(acetic acid), w/%

≤0.001

Alkalinity(Diethylamine), w/%

≤0.015

PH(25℃, 20% aqueous solution)

6.5-7.5

Conductivity(25℃)/(µS/cm)

≤2.0

A means the sum of all chromatographic impurity components after the main peak of diethylformamide in the chromatogram


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