86 1-800-452-1261
Potassium Ferrocyanide
potassium hexacyanoferrate(II)
reagent grade, crystal
K4Fe(CN)6•3H2O
F.W. 422.41
P0053 100 g $17.00
HAZARD ALERT: Dangerous if heated or if in contact with concentrated
acids since hydrogen cyanide gas may evolve. Slightly toxic by ingestion. LD50
6400 mg/kg (for anhydrous salt).
Storage: Inorganic #7
Disposal: #14. P-Listed (P030); purchase small amount for effective inventory
control.
Shelf Life: Fair to poor; effloresces on exposure to air; keep tightly capped
and store in a Flinn Chem-Saf ™ Bag.
Soluble: Water; not alcohol.
Color and Odor: Light yellow, odorless solid.
CAS No. 14459-95-1
Potassium Hexacyanoferrate(II)
see Potassium Ferrocyanide
Potassium Hexacyanoferrate(III)
see Potassium Ferricyanide
Potassium Hydrogen Carbonate
see Potassium Bicarbonate
Potassium Hydrogen Phosphate
see Potassium Phosphate, Dibasic
Potassium Hydrogen Phthalate
potassium acid phthalate
reagent grade, crystal
99.95–100.05% minimum
KHC8H4O4
F.W. 204.23
P0056 100 g $ 15.10
P0057 500 g 36.00
Storage: Inorganic #2
Disposal: #24a
Shelf Life: Indefinite
Soluble: Water
Color and Odor: White, odorless solid.
CAS No. 877-24-7
Technical Note: Primary standard for preparing volumetric alkali solutions.
Also used as a buffering agent.
Potassium Hydrogen Sulfate
see Potassium Bisulfate
Potassium Hydrogen Tartrate
see Potassium Bitartrate
Potassium Hydroxide
KOH
F.W. 56.11
Reagent P0058 100 g $ 9.40
pellet P0059 500 g 22.65
Laboratory grade P0061 500 g $10.90
flake P0062 2 kg 33.80
HAZARD ALERT: Skin contact causes severe blisters; strongly corrosive
as a solid and as a solution; very harmful if swallowed; extremely dangerous
to eyes. LD50 273 mg/kg. TLV-C 2 mg/m3.
SPECIAL HAZARD ALERT: Wear appropriate face and body protection
when making solutions; potassium hydroxide generates large amounts
of heat while dissolving. You might consider immersing your solution-making
vessel in an ice bath. The ice bath will better enable you to control the solution
temperature. Stir continuously.
Storage: Inorganic #4
Disposal: #10
Shelf Life: Fair; absorbs water and carbon dioxide.
Potassium Hydroxide continued
Soluble: Water, alcohol and glycerin.
Color and Odor: White, odorless solid.
CAS No. 1310-58-3
Technical Note: Reagent potassium hydroxide contains 10–15% water.
Potassium Iodate
powder
KIO3
F.W. 214.01
Reagent P0063 25 g $ 9.79
P0064 100 g 28.85
P0065 500 g 99.20
Laboratory grade P0277 100 g $24.65
HAZARD ALERT: Oxidizer; moderately toxic; tissue irritant. LD50
531 mg/kg.
Storage: Inorganic #6
Disposal: #12a
Shelf Life: Indefinite
Soluble: Water; dilute sulfuric acid; not alcohol.
Color and Odor: White solid with strong iodine odor.
CAS No. 7758-05-6
Potassium Iodate Solution
(as KIO3)
0.2 Molar P0168 500 mL $10.30
0.1 Molar P0169 500 mL 8.15
For storage, disposal, etc., see Potassium Iodate Solution.
Color and Odor: Colorless, odorless liquid.
Potassium
crystal
KI
F.W. 166.01
Reagent P0066 25 g $ 15.00
P0067 100 g 29.80
P0184 500 g 118.00/1
684.00/6
Laboratory grade P0278 100 g $ 30.75
P0279 500 g 110.00
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Poor; moisture- and light-sensitive.
Soluble: Water, alcohol, acetone, and glycerin.
Color and Odor: White, odorless solid.
CAS No. 7681-11-0
Potassium Iodide Solution
(as KI)
1 Molar P0170 500 mL $33.65
0.5 Molar P0171 500 mL 20.65
0.2 Molar I0026 500 mL 17.25
0.1 Molar P0172 500 mL 11.20
Storage: Inorganic #2
Disposal: #26b
Shelf Life: Good, if stored properly in a cool, dark place; protect from light and heat.
Color and Odor: Colorless, but darkens on exposure to light, slight iodine odor.
Potassium Nitrate
saltpeter
KNO3
F.W. 101.11
Reagent P0070 100 g $ 8.76
crystal P0071 500 g 17.70
Laboratory grade P0073 500 g $ 8.70
granular P0074 2 kg 30.25
HAZARD ALERT: Strong oxidant; fire and explosion risk when heated or
in contact with organic material; skin irritant. LD50 3750 mg/kg.
Storage: Inorganic #3
Disposal: #26b
Shelf Life: Good; slightly hygroscopic; store in a Flinn Chem-Saf ™ Bag.
Soluble: Water, glycerin, slightly in alcohol.
Color and Odor: White, odorless solid.
CAS No. 7757-79-1
Continued on next column.
What To Do in an Emergency?
More than 95% of the science teachers we talk to tell us their school has
no emergency action plan for the science department. Don’t wait for the
administrators to act. You get this much-needed action started. You need a
fire plan, you need an eye injury plan, you need a burn plan, you need an acid
contact plan… don’t wait for the event to happen. This is high priority stuff!
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