Is N-methylmorpholine miscible with glacial acetic acid?

Acetic acid and ethyl acetate are mutually soluble.
To put it simply, they are similarly compatible; acetic acid and ethyl acetate are both organic, and organics are generally soluble with organics, especially below four carbons. Water and ethyl acetate are insoluble because one is organic and the other is inorganic, and there is a large difference in polarity.

Acetic acid, also called acetic acid (36% – 38%), glacial acetic acid (98%), chemical formula CH3COOH, is an organic monobasic acid, the main component of vinegar. Pure anhydrous acetic acid (glacial acetic acid) is a colourless hygroscopic solid with a freezing point of 16.6°C (62°F) and colourless crystals after solidification, which is weakly acidic and corrosive in its aqueous solution, and the vapour has an irritating effect on the eyes and nose.
Ethyl acetate is a colourless transparent liquid, low toxicity, sweet taste, irritating odour at higher concentration, volatile, sensitive to air, can absorb moisture, making it slowly hydrolysis and acidic reaction. Miscible with chloroform, ethanol, acetone and ether, soluble in water (10% ml/ml). Can dissolve some metal salts (such as lithium chloride, cobalt chloride, zinc chloride, iron chloride, etc.). Relative density 0.902. Melting point -83℃. Boiling point 77℃. Refractive index 1.3719. flash point 7.2°C (open cup). Flammable. Vapour can form explosive mixture with air. LD50 (rat, oral) 11.3ml/kg.

Extended Reading：

PC-37 – Amine Catalysts (newtopchem.com)

Dabco foaming catalyst/polyurethane foaming catalyst NE300 – Amine Catalysts (newtopchem.com)

DABCO EG/PC CAT TD 33EG/Niax A-533 – Amine Catalysts (newtopchem.com)

FASCAT4100 catalyst – Amine Catalysts (newtopchem.com)

T120 1185-81-5 di(dodecylthio) dibutyltin – Amine Catalysts (newtopchem.com)

DABCO 1027/foaming retarder – Amine Catalysts (newtopchem.com)

DBU – Amine Catalysts (newtopchem.com)

bismuth neodecanoate/CAS 251-964-6 – Amine Catalysts (newtopchem.com)

stannous neodecanoate catalysts – Amine Catalysts (newtopchem.com)

polyurethane tertiary amine catalyst/Dabco 2039 catalyst – Amine Catalysts (newtopchem.com)