flinnsci.com CHEMICALS SAVE ON HAZMAT FEES 69
Storage: Organic #9 in a dedicated flammables cabinet. If one is not available,
store in a Flinn Saf-Stor™ Can.
Disposal: #10
Shelf Life: Indefinite
Color and Odor: Blue liquid with slight alcohol odor.
Methylene Chloride
dichloromethane
laboratory grade
CH2Cl2
F.W. 84.94
M0059 500 mL $13.44/1
78.30/6
(Packaged in PVC-coated bottles)
HAZARD ALERT: Possible carcinogen. Can be narcotic in high concentrations.
Slightly toxic. LD50 1600 mg/kg. TLV 25 ppm.
Storage: Organic #4
Disposal: #27j. U-Listed (U080); purchase small amounts for effective inventory
control.
Shelf Life: Volatile liquid; keep tightly capped.
Soluble: Alcohol; slightly in water.
Color and Odor: Colorless liquid with an ethyl ether odor.
CAS No. 75-09-2
Milk of Magnesia
see Magnesium Hydroxide Solution
Mineral Oil
light
laboratory grade
M0064 500 mL $10.19
M0065 4 liters 58.05
Storage: Organic #3
Disposal: #18b
Shelf Life: Indefinite
Soluble: Many common organic solvents; insoluble in water and acids.
Color and Odor: Colorless, odorless liquid.
CAS No. 8042-47-5
Technical Note: Mineral oil is a safer alternative to halogenated solvents in
halogen extraction experiments.
Mohr’s Salt
see Ferrous Ammonium Sulfate
Molasses
pure, dark M0068 300 mL $7.80
Storage: With nonhazardous miscellaneous organic material.
Disposal: #26b
Shelf Life: Good.
Soluble: Water, alcohol.
Color and Odor: Dark brown liquid with brown sugar odor.
Note: Not for human consumption.
Mold Inhibitor
see Propionic Acid
Molecular Sieves
see Ion Exchange Resin
Molybdic Acid
see Ammonium Molybdate
Mounting Medium
CytoSeal
Low viscosity M0194* 4 oz. $31.98
HAZARD ALERT: Contains toluene. Moderately toxic by ingestion and
inhalation.
Methyl Orange Indicator Solution
0.1%, aqueous
M0078 500 mL $8.65
HAZARD ALERT: Toxic by ingestion.
Storage: Organic #9
Disposal: #26b
Shelf Life: Fair
Color and Odor: Red/orange, odorless liquid.
4-Methyl-2-Pentanone
see Methyl Isobutyl Ketone
2-Methyl-1-Propanol
see Isobutyl Alcohol
2-Methyl-2-Propanol
see tert-Butyl Alcohol
Methyl Red
indicator, sodium salt
pH 4.4 red to 6.2 yellow
C15H14N3O2Na
F.W. 291.28
M0081 10 g $11.88
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite
Soluble: Alcohol, ether, water and acetic acid. Color of solution fades quickly
because of reduction.
Color and Odor: Brown/orange, odorless solid.
CAS No. 845-10-3
Methyl Red Indicator Solution
0.02%, aqueous
M0085 100 mL $ 8.22
M0086 500 mL 15.00
Storage: Organic #9
Disposal: #26b
Shelf Life: Fair to poor (color fades because of reduction).
Color and Odor: Red, odorless liquid.
5-Methyl Resorcinol
see Orcinol
Methylene Blue
biological stain
C16H18ClN3S•3H2O
F.W. 373.90
M0072 25 g $17.36
HAZARD ALERT: Slightly toxic. LD50 1180 mg/kg.
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water, alcohol, and chloroform.
Color and Odor: Gray/green, odorless solid.
CAS No. 7220-79-3
C.I. #52015
Methylene Blue Solution, Aqueous
1%, aqueous
M0074 100 mL $ 5.96
M0075 500 mL 11.29
Storage: Organic #9
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Deep blue, odorless liquid.
Methylene Blue Solution, Loeffler’s
Loeffler’s bacterial stain
contains: methylene blue, potassium hydroxide,
ethyl alcohol and water
M0095 500 mL $16.82
HAZARD ALERT: Contains ethyl alcohol; toxic by ingestion and inhalation;
body tissue irritant.
Methylene Blue Solution, Loeffler’s continued
Emergencies and Panic
“Do not panic!” That’s easy to say but hard to do during an emergency. A
good policy to prepare for emergencies is to simulate the event and practice
what should be done. If you have never used a hand-held fire extinguisher in
an emergency, is the time to learn when a fire erupts? Certainly not! Practice
and planning will help eliminate panic.
Continued on next column.
MOUNTING MEDIUM continued on next page.
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