1,1,2,2-Tetrachloroethane

CAS RN:79-34-5

Reactivities / Incompatibilities

Reactivity: reacts violently with 2,4-dinitrophenyl disulfide, nitrogen trioxide, and on contact with potassium or sodium

Unaffected by strong acids at ordinary and moderate temp, but converted to glyoxal sulfate by fuming sulfuric acid; in weak alkali trichloroethylene is produced, & in strong alkali, explosive dichloroacetylene; metals, in presence of steam, convert it to 1,2-dichloroethylene.

1,1,2,2-Tetrachloroethane is not an inert solvent, and on heating with solid potassium hydroxide or other base, hydrogen chloride is /evolved/ and chloro- or dichloroacetylene /are formed/ which ignite in air.

Mixtures of potassium with tetra- and pentachloroethane will often explode spontaneously after a short delay during which a voluminous solid separates out.

Tetrachloroethane may explode with potassium or sodium.

Mixtures of sodium-potassium alloy and bromoform, tetrachloroethane, or pentachloroethane can explode on standing at room temperature. They are especially sensitive to impact.

Chemically-active metals, strong caustics, fuming sulfuric acid [Note: degrades slowly when exposed to air].

Reacts violently with N2O4, 2,4-dinitrophenyl disulfide ... When heated in contact with solid potassium hydroxide, spontaneously flammable chloro- or dichloroacetylene gas is evolved. Any water causes appreciable hydrolysis, even at room temperature and both hydrolysis and oxidation become comparatively rapid above 110 deg C.

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