Page 99 - Demo

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SODIUM CHLORIDE SOLUTION continued
Storage: Inorganic #2
Disposal: #26b
Shelf Life: Good
Color and Odor: Colorless, odorless liquid.
Sodium Chloride Conductivity Standard
Storage: Inorganic #2
Disposal: #26b
Shelf Life: Good
Color and Odor: Colorless, odorless liquid.
Technical Note: AP9111 contains four 500-mL bottles of conduc- tivity calibration standards, one each of 50 mg/L, 500 mg/L, 1000 mg/L, and 5000 mg/L total dissolved solids. S0427 is a small bottle containing a solution of 500 mg/L total dissolved solids.
Sodium Chromate
 HAZARD ALERT: Known carcinogen. Highly toxic by ingestion, inhalation, and skin absorption; oxidizer. Possible reproductive/ fertility hazard. LD50 101 mg/kg.
Storage: Inorganic #8 in a Flinn Chem-Saf TM Bag inside a locked poisons cabinet.
Disposal: #12a
Shelf Life: Substance is efflorescent. Soluble: Water; slightly in alcohol. Color and Odor: Yellow, odorless solid. CAS No. 10034-82-9
Sodium Chromate
 HAZARD ALERT: Known carcinogen. Highly toxic by ingestion, inhalation, and skin absorption. Possible reproductive/fertility hazard. LD50 136 mg/kg.
Storage: Inorganic #8 in a Flinn Chem-Saf TM Bag inside a locked poisons cabinet.
Disposal: #12a
Shelf Life: Substance is efflorescent. Soluble: Water; slightly in alcohol. Color and Odor: Yellow, odorless solid. CAS No. 7775-11-3
Sodium Chromate Solution
HAZARD ALERT: Known carcinogen. Toxic by ingestion. Possible reproductive/fertility hazard.
Storage: Inorganic #8
Disposal: #12a
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SODIUM CITRATE continued
Shelf Life: Indefinite
Soluble: Water; not alcohol.
Color and Odor: White, odorless solid. CAS No. 6132-04-3
Sodium Cobaltinitrite
 HAZARD ALERT: Slightly toxic by ingestion; body tissue irritant; possible sensitizer.
Storage: Inorganic #3
Disposal: #27f
Shelf Life: Indefinite as a solid. An aqueous solution will decompose slowly. Adding a few drops of acetic acid to the aqueous solution can extend the shelf life by about three months.
Soluble: Water; slightly in alcohol.
Color and Odor: Mustard solid with medicinelike odor. CAS No. 13600-98-1
Sodium Dichromate
HAZARD ALERT: Known carcinogen as dust; corrosive to skin; harmful to eyes and respiratory tract; highly toxic. Possible repro- ductive/fertility hazard. LD50 50 mg/kg.
Storage: Inorganic #8 in a Flinn Chem-Saf TM Bag inside a locked poisons cabinet.
Disposal: #12a
Shelf Life: Deliquescent; keep tightly closed. Soluble: Water; not alcohol.
Color and Odor: Orange, odorless solid. CAS No. 7789-12-0
Sodium Dihydrogen Citrate
 HAZARD ALERT: May be irritating to body tissue. Storage: Inorganic #2
Disposal: #26a
Shelf Life: Indefinite.
Soluble: Water; not alcohol.
Color and Odor: White, odorless solid. CAS No. 18996-35-5
Sodium Dihydrogen Phosphate
see Sodium Phosphate, Monobasic
conductivity calibration standards
S0427
65 mL
$ 6.05
(500 mg/L)
AP9111
kit
26.05
sodium hexanitrocobaltate(III) for detection of potassium reagent grade, powder
Na3Co(NO2)6 F.W. 403.96
S0193
100 g
$39.20
tetrahydrate
reagent grade, crystal
Na2CrO4•4H2O F.W. 234.06
S0313
25 g
$ 7.35
S0277
100 g
27.00
laboratory grade, granular
Na2Cr2O7 • 2H2O F.W. 298.03
S0071
250 g
$ 9.70
anhydrous
laboratory grade, granular
Na2CrO4 F.W. 161.97
S0278
100 g
$10.25
crystalline powder
citric acid, monosodium salt sodium citrate, monobasic NaC6H7O7
F.W. 214.11
S0455
25 g
$10.55
0.1 Molar
(as Na2CrO4•4H2O)
S0239
500 mL
$7.45
Bottle Labels
If the task of labeling a bottle of chemical falls to you, then please take the extra few minutes to prepare a complete label. Apply the label in as permanent a manner as possible, and apply some form of protection over the label. Why? The “quick and dirty” label job today is next year’s mystery substance. A great and practical policy is to eliminate a substance or solution from your shelves unless you expect to use the material in the next academic year. Do not store what you do not need!
Shelf Life: Indefinite
Color and Odor: Yellow, odorless liquid.
Sodium Citrate
Storage: Inorganic #2 Disposal: #26a
Continued on next column.
citric acid, trisodium salt laboratory grade, granular
Na3C6H5O7 • 2H2O F.W. 294.10
S0068
500 g
$13.70