flinnsci.com CHEMICALS SAVE ON HAZMAT FEES 53
Organic Solvents for GC Analysis
Nine solvents—two alcohols, three esters, and four ketones—25 mL each,
to do all of the experiments in the Vernier Mini GC lab manual! Solvents
within each functional group class differ in the number of carbon atoms
(CH2 groups), giving rise to a progressive trend in boiling point and excellent
separation by gas chromatography. Convenient set of solvents may
also be used for boiling point or fractional distillation labs, qualitative
analysis of organic functional groups, and identification of unknowns.
Solvents include: methyl alcohol, ethyl alcohol, acetone, methyl ethyl
ketone, methyl isobutyl ketone, 2-pentanone, ethyl acetate, propyl acetate,
and butyl acetate. Requires a fume hood or well-ventilated area.
Catalog No. Description Price/Each
AP7480 Organic Solvents for GC Analysis $62.24
Ethyl Alcohol (Burner Fuel, Safety)
Denatured ethyl alcohol with added sodium salt.
The added presence of the sodium causes the
flame to be more visible, thus reducing the potential
for accidental burns.
E0025 4 liters $38.00
HAZARD ALERT: Dangerous fire risk; addition of denaturant makes the
product poisonous—it cannot be made nonpoisonous.
Storage: Organic #2 in a dedicated flammables cabinet. If a flammables
cabinet is not available, store in a Flinn Saf-Stor™ Can.
Disposal: #26b
Shelf Life: Excellent if stored safely.
Soluble: Miscible with water and many organic solvents.
Color and Odor: Colorless liquid with alcohol odor.
Safety Purchase Suggestion: Do not buy large quantities or large package
sizes of ethyl alcohol unless you have safe and fire-resistant storage
facilities on your school premises.
Technical Note: Never allow the use of duplicator fluid for fueling alcohol
burners. The products of combustion from duplicator fluids are extremely
hazardous to your health and the health of your students.
Safer Alternative for Alcohol Burners: Consider acquiring portable
gas burners that operate from small bottles of gas; see page 120. We suggest
these portable gas burners are safer than alcohol burners. Yes, such burners
are expensive, but if you calculate the real cost over the life of the burners, it
may easily be equal to alcohol burners. A hot plate or these suggested gas
burners are safer than alcohol burners.
Ethylenediaminetetraacetic Acid
EDTA
reagent, powder
C10H16N2O8
F.W. 292.25
E0017 100 g $18.06
HAZARD ALERT: Toxic by ingestion.
Storage: Organic #1
Disposal: #26a
Shelf Life: Indefinite
Soluble: Slightly in water; insoluble in most common organic solvents.
Color and Odor: White, odorless solid.
CAS No. 60-00-4
Ethylenediaminetetraacetic Acid, Disodium Salt
EDTA, disodium salt, dihydrate
reagent, powder
C10H14N2Na2O8•2H2O
F.W. 372.25
E0019 100 g $18.81
Storage: Organic #1
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water; insoluble in most common organic solvents.
Color and Odor: White, odorless solid.
CAS No. 6381-92-6
Technical Note: The disodium salt is most convenient for the preparation
of solutions for hard water analysis and is the most commonly used reagent.
A 0.01 M disodium EDTA solution works well in this regard.
EDTA Solution
0.1 Molar E0059 500 mL $6.29
contains EDTA, disodium salt
Storage: Organic #1
Disposal: #26b
Shelf Life: Indefinite
Soluble: Aqueous solution; immiscible with nonpolar organic solvents.
Color and Odor: Colorless, odorless liquid.
Technical Note: Commonly used for hard water analysis and water softening
experiments.
Ethylene Glycol
laboratory grade
HOCH2CH2OH
F.W. 62.07
E0020 500 mL $10.21
HAZARD ALERT: Moderately toxic by ingestion, inhalation and skin
absorption, but the ingestion of even small quantities can be lethal to some
people. LD50 4700 mg/kg. TLV 127 mg/m3 as vapor and mist.
Storage: Organic #2
Disposal: #18b
Shelf Life: Substance is hygroscopic; store in a Flinn Chem-Saf ™ Bag.
Soluble: Water, alcohol, and acetone.
Color and Odor: Colorless liquid with auto anti-freeze odor.
CAS No. 107-21-1
Ethylenedinitrilotetraacetic Acid
see Ethylenediaminetetraacetic Acid
Ethyl Ether
see Ether, Ethyl
F
Ferric Ammonium Citrate
ammonium iron(III) citrate
(so called brown)
laboratory grade, powder
F0003 500 g $23.38
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Poor; substance deliquescent; affected by light; store in Flinn
Chem-Saf ™ Bag and then inside Flinn Saf-Stor™ Can.
Soluble: Water; not alcohol.
Color and Odor: Mustard, odorless solid.
CAS No. 1185-57-5
Ferric Ammonium Sulfate
ammonium iron(III) sulfate
reagent, crystal
FeNH4(SO4)2•12H2O
F.W. 482.21
F0004 100 g $12.31
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Fair to poor; substance efflorescent; light sensitive; store in a
Flinn Chem-Saf ™ Bag.
Soluble: Water; not alcohol.
Color and Odor: Light purple, odorless solid.
CAS No. 7783-83-7
What Does “Denatured” Mean
When Describing Ethyl Alcohol?
A denaturant is added to ethyl alcohol to make it unfit for use as a beverage.
Frequently, the denaturant added is methyl alcohol (wood alcohol), which
is very toxic. Denatured alcohol is not subject to federal alcohol taxes for
beverages. There are many formulations of denatured alcohol, but the goal
is always the same—to make ethyl alcohol unfit for use as a beverage.
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