flinnsci.com CHEMICALS SAVE ON HAZMAT FEES 45
Cleaner, RBS 35® continued Cobalt Nitrate continued
Technical Note: Super strength liquid cleaning agent for glass, porcelain,
and plastics. For most cleaning problems including nongreasy residues, add
20 mL of the concentrate to one liter of water. To remove grease, add one part
of methyl or ethyl alcohol to two parts of the above cleaning solution. While
the product is expensive, a little goes a long way and is a safer option than
using dichromate/sulfuric acid.
Cleaner, Simple Green®
general purpose liquid cleaner,
phosphate-free, biodegradable;
degreaser C0405 32 oz. $12.38
Storage: Washing area.
Disposal: Dilute with water and place down the drain.
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Clear green liquid with sassafras odor.
Cobalt
laboratory grade, piece
Co
A.W. 58.93
C0067 25 g $31.23
HAZARD ALERT: Possible carcinogen as fume or dust. TLV 0.01 mg/m3 as
dust or fume. LD50 6171 mg/kg.
Storage: Inorganic #1
Disposal: #26a
Shelf Life: Indefinite
Soluble: Nitric acid.
Color and Odor: Silver/brown, odorless solid.
CAS No. 7440-48-4
Cobalt Chloride
cobalt(II) chloride
crystal
CoCl2•6H2O
F.W. 237.95
Reagent C0225 25 g $12.09
C0069 100 g 27.41
C0070 500 g 96.75
HAZARD ALERT: Possible carcinogen as fume or dust. Moderately toxic
by ingestion; causes blood damage. Practice strict hygiene in the use of this
substance. Possible reproductive/fertility hazard. LD50 766 mg/kg.
Storage: Inorganic #2
Disposal: #27f
Shelf Life: Hygroscopic; keep tightly closed. Good if stored properly.
Soluble: Water, alcohol, and acetone.
Color and Odor: Red/violet, odorless solid.
CAS No. 7791-13-1
Cobalt Chloride Solution
0.1 Molar
(as CoCl2•6H2O) C0242 500 mL $7.47
For hazard alert, storage, disposal, etc.,
see Cobalt Chloride, C0225.
Color and Odor: Pink, odorless liquid.
Cobalt Chloride, Test Paper
see Test Papers on page 193
Cobalt Nitrate
cobalt(II) nitrate
crystal
Co(NO3)2•6H2O
F.W. 291.05
Reagent C0071 100 g $22.90
C0072 500 g 69.88
Laboratory grade C0412 100 g 23.06
C0413 500 g 70.36
HAZARD ALERT: Oxidizer; fire risk in contact with organic material;
moderately toxic; possible carcinogen. Possible reproductive/fertility hazard.
LD50 691 mg/kg.
Storage: Inorganic #3
Disposal: #27f
Shelf Life: Poor; substance deliquescent; store in a Flinn Chem-Saf ™ Bag.
Soluble: Water, alcohol, and most organic solvents.
Color and Odor: Brown/orange, odorless solid.
CAS No. 10026-22-9
Cobalt Oxide
cobalt(II, III) oxide
laboratory grade, powder
Co3O4
F.W. 240.80
C0220 100 g $83.20
HAZARD ALERT: Possible carcinogen; slightly toxic. LD50 5000 mg/kg.
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Indefinite
Soluble: Sulfuric acid: insoluble in water.
Color and Odor: Black, odorless solid.
CAS No. 1308-06-1
Congo Red
biological stain/indicator
pH 3.0 blue to 5.0 red
C32H22N6Na2O6S2
F.W. 696.67
C0120 10 g $13.81
HAZARD ALERT: Possible reproductive/fertility hazard.
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water and alcohol.
Color and Odor: Dark brown, odorless solid.
CAS No. 573-58-0
C.I. #22120
Congo Red Indicator Solution
0.1%, aqueous
C0128 500 mL $14.14
HAZARD ALERT: Possible reproductive/fertility hazard.
Storage: Organic #9
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Orange/red, odorless liquid.
Copper, Foil
Cu
A.W. 63.55
0.005" thick
C0137 100 g $14.80
(100 g = approx. 1 sq. foot)
C0138 500 g 62.56
(500 g = approx. 55" long x 12" wide)
Storage: Inorganic #1
Disposal: #26a
Shelf Life: Indefinite
Color and Odor: Copper, odorless solid.
CAS No. 7440-50-8
Cans—Great Friends
Flinn Scientific packages calcium and other reactive metals in metal cans.
Why? Because the package (i.e., the can) is the most protective container
eco nomically available to hold reactive substances. When you have to
deal with chemicals that are unusually hazardous, consider using plastic
bags and outer cans to provide additional protection for these “devils.” Put
your bottle into a bag and then into a can. See Flinn Chem-Saf™ Bags and
Saf-Stor™ Cans on page 653.
Continued on next column.
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