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Chemicals
1-800-452-1261
Invertase
enzyme from yeast
granular
Storage: Organic #2
Disposal: #26a
Shelf Life: Indefinite if kept dry. Soluble: Water
Iodine Solution
iodine-iodide
0.1 Molar 0.05 Molar
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Color and Odor: Brown solid with dry dog food odor.
CAS No. 9001-57-4
Technical Comment: You can save money by making your own crude invertase solution. Mix one-half package of baker’s yeast with approximately 40 mL of distilled (not deionized) water. Centrifuge this mixture for approximately five minutes. Decant off the top liquid and you have a crude solution of hydrolytic enzyme invertase.
Storage: Inorganic #2
Disposal: #12a
Shelf Life: Fair to poor; store away from heat and direct light. Color and Odor: Brown/red liquid with iodine odor.
Iodine
resublimed I2
F.W. 253.81 Reagent crystals
Laboratory grade
granules
I0006 I0007 I0008
I0060 I0061
25 g 100 g 500 g
100 g
$ 20.00 45.10 205.90
$ 40.50 174.25
 HAZARD ALERT: Irritating to eyes and skin.
Storage: Inorganic #2
Disposal: #12a
Shelf Life: Fair to poor; store away from heat and direct Color and Odor: Amber liquid with slight iodine odor. Technical Note: Turns purple in the presence of starch.
Iodine Solution, Gram
staining solution
iodine-iodide
For hazard alert, storage, disposal, etc.,
see Iodine–Potassium Iodide Solution, I0038. Color and Odor: Brown liquid with iodine odor.
HAZARD ALERT: Toxic by ingestion or inhalation. Reacts violently with reducing materials, sulfur, iron, alkali metals, metal powders and phosphorus. Irritates the skin; corrosive to eyes and respiratory tract. TLV 1.0 mg/m3.
Storage: Inorganic #2
Disposal: #12a
Shelf Life: Fair; the substance sublimes. Reacts with and corrodes metal shelves or metal containers. Store in a Flinn Chem-Saf TM Bag. Soluble: Many organic solvents; not water.
Color and Odor: Black/purple solid with unique, acrid odor.
CAS No. 7553-56-2
Technical Note: Iodine may be removed from clothing by washing the stain with a 10% solution of sodium thiosulfate and then rinsing with water.
Iodine Solution, Lugol’s
Weigert’s, vital stain solution iodine-iodide
I0036 100 mL I0010 500 mL
Iodine, Tincture
contains potassium iodide, iodine, water and ethyl alcohol
I0009 100 mL I0035 500 mL
$ 7.50 22.00
For hazard alert, storage, disposal, etc.,
see Iodine–Potassium Iodide Solution, I0038. Color and Odor: Brown liquid with iodine odor.
Ion Exchange Resin
Ion Exchange Resin SAC
strongly acidic cation exchange resin, Dowex® 50X8 50–100 mesh I0043 100 g
Ion Exchange Resin SAC-Na
strongly acidic cation exchange resin, sodium form for water softening
 HAZARD ALERT: Contains ethyl alcohol; toxic by ingestion and inhalation; flammable liquid.
Storage: Inorganic #2, store as a flammable liquid.
Disposal: #12a
Shelf Life: Good, if stored safely.
Color and Odor: Brown/black liquid with iodine and alcohol odor.
Iron
Fe, A.W. 55.85
Filings, Pure iron
fine, 65 mesh
Filings, Non-rusting alloy
fine, 65 mesh
Galvanized
28 gauge, 2.5" square pieces
Nails
3" long, 10 penny nongalvanized steel Powder, Reagent grade
reduced electrolytic
Powder, Laboratory grade
Sheet
mild steel
12" x 12" x 0.024", B&S gauge #24
I0030
100 g
$41.25
I0039 500 mL I0048 100 mL
$16.95
$ 8.95 14.85
500 g
(All above package sizes are
G0036 100 mL G0009 500 mL
packaged in wax-sealed, PVC-coated bottles)
I0023 500 mL  HAZARD ALERT: Irritating to eyes and skin.
Iodine–Potassium Iodide Solution
test solution for starch
I0038 100 mL I0027 500 mL
$6.60 10.25
light.
$6.10 11.15
$ 6.30 12.75
$76.35
$21.05
$ 7.70 25.80
$11.05 $ 9.60 $ 6.60
$14.50
$13.90 10.80
(Both package sizes packaged in PVC-coated bottles)
Z0001
Storage: Miscellaneous organic.
Disposal: #26a
Shelf Life: Excellent
Color and Odor: Buff or brown, odorless solid.
500 g
500 g 2 kg
500 g pkg./5 1 lb
100 g
500 g each
I0011 I0012
I0059 I0064 I0032
I0013
I0014 I0015
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IRON continued on next page.