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A QCTCHEMICALS BULLETIN
NEW QO DEVELOPMENT CHEMICALS QO® D i h y d r o p y r a n
QO® M e t h y l t e t r a h y d r o f u r a n
H2
H,C
H,C
CH2
H2C
CH-CH 3
\y
CH
QO Dihydropyran is a colorless, mobile liquid of ether like odor; it is very reactive, the activity is centered around the double bond. Alcohols add readily to the double bond in the presence of acids to give an acetal from which the alcohol can be regenerated. This gives a useful method of protecting the alcohol group during reaction. Dihydro pyran also exhibits properties of a vinyl ether. Bulletin 137 describes many more reactions.
QO Methyltetrahydrofuran is a cyclic ether useful in organic synthesis, and may also have value as a reaction solvent. It is a colorless, mobile liquid of ether-like odor. In water it has the property of inverse solubility—that is, solubility increases with a decrease in temperature. Re quest Bulletin 136.
Physical Properties BOILING POINT, °C.(760mm) Pure Compound FREEZING POINT, °C SPECIFIC GRAVITY, 20/4°C REFRACTIVE INDEX, n25/D FLASH POINT, °F (Tag closed cup) SOLUBILITY
84.3 -70 0.927 1.4380 0
I f (25°C)
g./100g. H 2 0
0.5(25°C) 9.8(b.71-2°C) 34.9
VAPOR PRESSURE, m m . of Hg at 0°
-
0.854 1.4025 12
15.1(20°C)
g.H 2 O/100g. chemical WATER AZEOTROPE % water
57.0 148.0 ~ 302.0 — 600.00
80.2 -136
5.3(20°C) -
10 20 30 40 50 60 - 70
These chemicals are available in cans and 55 gallon drums. r
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Q u a k e r Oafs
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The Quaker Qàts (ρ mpany CHEMICALS
DIVISION
333Z The Merchandise Mart, Chicago 54, Illinois Room 533Z# 100 Wall Street, New York 5, New York
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64.5 102 165 248 366 536 —
Room 433Z, 48 S.E. Hawthorne Blvd., Portland 14, Oregon
