Page 27 - Demo

“Your Safer Source for Science”
2-BROMOBUTANE continued
Shelf Life: Fair; volatile liquid. Store in a cool, dry place.
Soluble: Alcohol, acetone and ether; insoluble in water.
Color and Odor: Colorless to light brown liquid with pleasant odor. CAS No. 78-76-2
Save On HazMat Fees
25
Bromoform
tribromomethane
stabilized with 1–3% ethyl alcohol CHBr3
F.W. 252.75
Buffer Solutions
concentrated
pH accuracy ±0.02 at 25 °C.
pH 4.00 when 1 volume is diluted to 5 volumes
B0098 500 mL pH 7.00 when 1 volume is diluted to 25 volumes
B0099 500 mL pH 10.00 when 1 volume is diluted to 10 volumes
B0100 500 mL
$12.55
17.70
13.40
 HAZARD ALERT: Slightly toxic; lachrymator. TLV 5.2 mg/m3. LD50 1147 mg/kg.
Storage: Organic #4
Disposal: #27j. U-Listed (U225); purchase small amounts for effec- tive inventory control.
Shelf Life: Good
Soluble: Alcohol and many organic solvents.
Color and Odor: Colorless liquid with chloroformlike odor. CAS No. 75-25-2
B0024
10 g
$45.05
HAZARD ALERT: Low and high pH concentrates (pH 4 and 10) should be treated as strongly acidic and alkaline solutions, respectively.
Storage: With Inorganic #2 family for convenience.
Disposal: #26b
Shelf Life: Much better than prepared buffers that are ready to use. Concentrates last longer and take up less shelf space.
Buffer Solutions
pH accuracy ±0.02 at 25 °C 500 mL bottle
Catalog No.
pH Value
Price
B0087
2.00
$14.65
B0088
3.00
14.60
B0089
4.00 (red)
6.35
B0090
5.00
14.70
B0091
6.00
14.65
B0092
7.00 (green)
6.50
B0093
8.00
14.75
B0094
9.00
14.70
B0095
10.00 (blue)
6.35
B0096
11.00
14.70
B0097
12.00
14.60
Bromphenol Blue
indicator, sodium salt
pH 3.0 yellow to 4.6 purple
reagent, powder
C19H9Br4O5SNa
F.W. 691.97
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Dark green, odorless solid. CAS No. 34725-61-6
Bromphenol Blue Indicator Solution
0.04%, aqueous
B0065
 HAZARD ALERT: Buffers in low pH range are strongly acidic; those in high pH range are strongly alkaline.
Storage: Best and most conveniently stored together with proper recognition and precaution for their individual acid or alkaline nature. Keep bottles tightly closed.
Disposal: #26b
Shelf Life: Ready-to-use Buffer Solutions’ shelf life varies depending on pH value—from good to poor. The higher the pH value, the shorter the shelf life. Storage conditions vary so widely that it isn’t possible to be specific about shelf life. Concentrated buffers, buffer capsules and buffers in Chemvelopes® all have better long-term shelf life than standard buffers. Technical Note: The pH 4, 7 and 10 buffer solutions are dyed for convenience to allow easy identification and prevent confusion. These three buffers are the standards used to calibrate pH meters.
Buffer Solutions B0089, B0092, B0095
Storage: Organic #9
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Dark purple, odorless liquid.
F.W. 646.38
$ 5.85 20.50 11.50
$3.25 6.00 9.95
B0045 B0046 B0233
Storage: Organic #9
Disposal: #26a
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Blue-green, odorless solid. CAS No. 34722-90-2
Bromthymol Blue Indicator Solution
Reagent Laboratory grade
1 g 5 g 5 g
100 mL
500 mL 1000 mL
B0044
5 g
100 mL
$18.50
$6.35
Bromthymol Blue
indicator, sodium salt
pH 6.0 yellow to 7.6 blue
powder
C27H27Br2O5SNa
0.04%, aqueous
B0173 B0047 B0228
Storage: Organic #9
Disposal: #26b
Shelf Life: Indefinite
Color and Odor: Blue-green, odorless liquid.