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Chemicals
1-800-452-1261
Potassium Oxalate
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Efflorescent in warm, dry air; keep tightly capped; store in a Flinn Chem-Saf TM Bag.
Soluble: Water
Color and Odor: Off-white, odorless solid.
CAS No. 6487-48-5
Potassium Periodate
 HAZARD ALERT: Strong oxidant, fire risk in contact with organic material; severe skin irritant.
Storage: Inorganic #6
Disposal: #12a
Shelf Life: Indefinite
Soluble: Slightly in water.
Color and Odor: White, odorless solid. CAS No. 7790-21-8
Potassium Permanganate
 HAZARD ALERT: Powerful oxidizing agent; may react violently with easily oxidized substances and can explode on sudden heat- ing in a closed container; common cause of eye accidents; wear face protection. Strong skin irritant; slightly toxic by ingestion. LD50 1090 mg/kg.
Storage: Inorganic #8
Disposal: #12a
Shelf Life: Indefinite
Soluble: Water, alcohol, and methyl alcohol; decomposes in water. Color and Odor: Gray/black, odorless solid.
CAS No. 7722-64-7
Potassium Permanganate Solution
 HAZARD ALERT: Solution may be a skin irritant. Storage: Inorganic #8
Disposal: #12a
Shelf Life: Fair to poor.
Color and Odor: Dark purple, odorless liquid.
 HAZARD ALERT: Strong oxidant; skin irritant; solid and solution readily liberate oxygen on heating; fire risk with organic material; moderately toxic. LD50 802 mg/kg.
Storage: Inorganic #6
Disposal: #12a
Shelf Life: Fair to poor.
Soluble: Water; not alcohol.
Color and Odor: White, odorless solid. CAS No. 7727-21-1
Potassium Phosphate, Monobasic
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Poor; hygroscopic.
Soluble: Water; not alcohol.
Color and Odor: White, odorless solid. CAS No. 7778-77-0
Potassium Phosphate, Dibasic
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Poor unless stored under dry conditions; hygroscopic; keep tightly capped; store in a Flinn Chem-Saf TM Bag.
Soluble: Water
Color and Odor: White, odorless solid.
CAS No. 7758-11-4
Potassium Phosphate, Tribasic
HAZARD ALERT: Slightly toxic; severe body tissue irritant. LD50 1450 mg/kg.
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Poor unless stored under dry conditions; hygroscopic; store in a Flinn Chem-Saf TM Bag.
Soluble: Water — giving a strongly basic solution; insoluble in alcohol.
Color and Odor: White, odorless solid. CAS No. 7778-53-2
Potassium Sodium Tartrate
Storage: Inorganic #2
Disposal: #26a
Shelf Life: Fair to poor; efflorescent; store in a Flinn Chem-Saf TM Bag. Soluble: Water; not alcohol.
Color and Odor: White, odorless solid.
CAS No. 6381-59-5
Potassium Persulfate
flinnsci.com
laboratory grade, crystal
K2S2O8 F.W. 270.33
P0199
100 g
$12.30
P0080
500 g
37.65
laboratory grade, crystal
K2C2O4•H2O F.W. 184.24
P0198
100 g
$10.75
P0075
500 g
22.25
potassium meta-periodate laboratory grade, crystal
KIO4
F.W. 230.01
P0076
25 g
$32.55
reagent grade, crystal
KH2PO4 F.W. 136.09
P0141
100 g
$13.75
P0081
500 g
28.90
reagent grade, powder
K2HPO4 F.W. 174.18
P0142
100 g
$11.25
P0082
500 g
26.25
reagent grade, crystal
KMnO4 F.W. 158.04
P0077
100 g
$ 9.20
P0078
500 g
18.65
P0079
2 kg
73.40
reagent grade, powder
K3PO4•nH2O F.W. 212.27 (as K3PO4)
P0083
100 g
$24.65
(as KMnO4)
0.2 Molar
P0239
500 mL
$7.05
0.1 Molar
P0175
500 mL
7.80
0.01 Molar
P0176
500 mL
6.35
Rochelle salt
reagent grade, crystal
KNaC4H4O6•4H2O F.W. 282.23
P0084
100 g
$11.80
P0085
500 g
23.65
How to Neutralize a Base Spill
The common answer is to use vinegar to neutralize a base spill. Don’t do it. You will have to add gallons of vinegar, and this will only make the spill larger. Use anhydrous citric acid powder. It has three acid groups for neutralization, low toxicity and is easily poured onto a spill. Keep a supply of citric acid powder on hand any time you are working with bases. See pages 153–155 for a complete listing of spill control materials.