1,4-DIOXANE

PRODUCT IDENTIFICATION
CAS NO. 123-91-1

1,4-DIOXANE

EINECS NO. 204-661-8
FORMULA C4H8O2
MOL WT. 88.11
H.S. CODE 2932.90

TOXICITY

  
SYNONYMS p-Dioxane; 1,4-Dioxacyclohexane; Diethylene dioxide;
1,4-diethylene dioxide; diethylene ether; Dioxyethylene ether; Diox; Dioxane; Tetrahydro-p-dioxin; Tetrahydro-para-dioxin; Tetrahydro-1,4-dioxin; Diokan; 1,4-Diethyleneoxide; Diethylene Oxide; Ethylene Glycol Ethylene Ether; Glycol Ethylene Ether 8; 1,4-Dioxano (Spanish); 1,4-Dioxanne (French);

DERIVATION

 

CLASSIFICATION

SOLVENT

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE clear liquid, ether-like odor
MELTING POINT 11 - 12 C
BOILING POINT 102 C
SPECIFIC GRAVITY 1.035 ± 0.001
SOLUBILITY IN WATER miscible
pH

 

VAPOR DENSITY 3.03
AUTOIGNITION

180 C

NFPA RATINGS Health: 2; Flammability: 3; Reactivity: 1

REFRACTIVE INDEX

 1.417
FLASH POINT

12 C

STABILITY Stable under ordinary and under nitrogen conditions

APPLICATIONS
Cyclic ethers have ring structure where the oxygen has become part of the ring. The term of epoxide indicate three membered cyclic ether (also called oxirane) in which an oxygen atom is joined to each of two carbon atoms that are already bonded to each other; four-membered cyclic ether is called oxetane; five-membered cyclic ether, furan (or oxolane); six-membered cyclic ether, pyran (also called oxane) respectively. Their unhindered oxygen atom carries two unshared pairs of electrons - a structure which favors the formation of coordination complexes and the solvation of cations. Cyclic ethers are used as important solvents, as chemical intermediate and as monomer for ring-opening polymerization. 1,4-Dioxane is a cyclic ether which has four carbon atoms and two oxygen atoms, resulting in two ether functional groups in the same molecule. It is more polar and more hygroscopic than diethyl ether, the C4 linear ether. It has higher polarity higher boiling point than diethyl ether. 1,4-Dioxane is used in;
  • Solvent for celluloses, resins, lacquers, synthetic rubbers, adhesives, sealants, fats, oils, dyes and protective coatings
  • Stabilizer for chlorinated solvents, printing inks
  • Wetting and dispersing agent in textile processing agrochemicals and pharmaceuticals
  • Solvent-extraction processes
  • Detergent preparations

There are two other dioxanes, 1,2-dioxane (CAS RN: 5703-46-8) and 1,3-dioxane (CAS RN: 505-22-6) indicating oxygen positions in the cycle. 1,3-Dioxane structure is the moiety of bronidox, an effective bactericide, antiseptic and preservative which can be used in cosmetics and household goods. Morpholine is the form which an oxygen atom is replaced by a nitrogen atom. Morpholine has both a secondary amine and an ether functional group in the same cyclic molecule.

SALES SPECIFICATION

APPEARANCE

 clear liquid

PURITY

99.5% min

MOISTURE

0.2% max

COLOR, HAZEN

15 max

TRANSPORTATION
PACKING 200kgs in drum
HAZARD CLASS 3 (Packing Group: II)
UN NO. 1165
OTHER INFORMATION
Cancer suspect, investigated as a mutagen
Hazard Symbols: XN F, Risk Phrases:11/19/36/37/40, Safety Phrases:16/36/37