Page 109 - Demo

“Your Safer Source for Science”
SULFURIC ACID continued
 HAZARD ALERT: Severely corrosive to eyes, skin and other tissue; considerable heat of dilution with water; mixing with water may cause spraying and spattering. Solutions might best be made by immersing the mixing vessel in an ice bath. Even very dilute solu- tions are harmful to eyes and skin. Always add the acid to water, never the reverse; extremely hazardous in contact with finely divided materials, carbides, chlorates, nitrates, and other combustible materials. TLV 1 mg/m3. LD50 2140 mg/kg.
Storage: Inorganic #9 in a dedicated acid cabinet and away from any source of water; if an acid cabinet is not available, store in a Flinn Saf-CubeTM.
Disposal: #24b
Shelf Life: Good, but only if stored away from water and under safe conditions. Sulfuric acid has an affinity to water—abstracting it from the air and from organic substances, hence it chars wood, sugar, etc. If sulfuric acid has turned dark brown on your shelf its purity would be in question.
Soluble: Water, evolving very considerable heat. Use an ice bath. Color and Odor: Colorless liquid with sulfurous odor.
CAS No. 7664-93-9
Cap Safety Color Code: Yellow
Technical Note: Spilled sulfuric acid presents a very slippery floor problem. We hope you understand why it is essential to maintain a bucket of dry sand in the area where sulfuric acid is stored.
Safety Purchase Suggestion: Buy and store only small pack- age sizes and small quantities. For safety reasons, Flinn offers larger sizes of sulfuric acid and other hazardous substances in PVC-coated bottles. We have attempted to price the products in these safer containers as low as possible.
*Sulfuric acid is exactly as described under catalog number S0144 but in a PVC-coated bottle. In the event of breakage, acid and glass shards are safely retained in a PVC outer envelope. The PVC-coated bottle is a safer package choice.
Sulfuric Acid Solution
Save On HazMat Fees
107
for soap-making experiments
T0084
100 g
$8.15
laboratory grade, powder
C76H52O46 F.W. 1701.18
T0002
100 g
$17.50
laboratory grade, crystal HO2CCH(OH)CH(OH)CO2H
F.W. 150.09
T0054
100 g
$11.80
T0003
500 g
26.15
(as H2SO4)
12.5 Molar
S0380
500 mL
$15.70
S0406
1 liter
26.50
9 Molar
S0413
500 mL
$17.00
S0414
1 liter
25.90
6 Molar
S0415
500 mL
$14.05
S0416
1 liter
23.35
5 Molar
S0208
500 mL
$13.30
S0209
1 liter
21.75
3 Molar
S0417
500 mL
$10.45
S0418
1 liter
17.70
2 Molar
S0204
500 mL
$11.75
S0205
1 liter
14.95
1 Molar
S0202
500 mL
$ 9.70
S0203
1 liter
13.35
0.5 Molar
S0161
500 mL
$ 7.50
0.1 Molar
S0419
500 mL
$ 9.25
S0420
1 liter
11.00
 HAZARD ALERT: Treat all sulfuric acid solutions with the same caution you would have for concentrated sulfuric acid. For example, the pH of 0.05 M sulfuric acid solution is 1.2.
Storage: Inorganic #9; preferably in a dedicated acid cabinet. Disposal: #24b
Shelf Life: Indefinite
Soluble: Water
Color and Odor: Colorless, odorless liquid.
T
TALC continued
Storage: Inorganic #4
Disposal: #26a
Shelf Life: Indefinite if kept dry; store in a Flinn Chem-Saf TM Bag. Soluble: Not soluble in water or alcohol.
Color and Odor: Off-white, odorless solid.
CAS No. 14807-96-6
Tallow
Storage: Organic #3
Disposal: #26a
Shelf Life: Poor
Soluble: Organic solvents.
Color and Odor: White solid with beef stock odor.
Tannic Acid
 HAZARD ALERT: Slightly toxic by ingestion, inhalation, and skin absorption; possible allergen. LD50 2260 mg/kg.
Storage: Organic #1
Disposal: #26a
Shelf Life: Indefinite; color darkens on exposure to air. Soluble: Water, alcohol, and acetone.
Color and Odor: Tan/yellow solid with slight cucumber odor. CAS No. 1401-55-4
l-Tartaric Acid
Storage: Organic #1
Disposal: #24a
Shelf Life: Indefinite
Soluble: Water and alcohol.
Color and Odor: Off-white solid with slight malt odor. CAS No. 87-69-4
Tes-Tape
see Glucose Test Strips
Test Papers (litmus, etc.)
see pages 552–556
Testosterone, Testosterone Propionate
No longer available. The Food and Drug Administration (FDA) has regulated these substances due to steroid abuse. A license is now required to sell and purchase them.
Tetrachloroethylene
see Perchloroethylene
Preparing Sulfuric Acid Solution?
Always ADD ACID (AA) to water! A great amount of heat is liberated when sulfuric acid is added to water. The temperature of the solution will rise rapidly. In fact, the temperature may rise so fast that the solution will boil and possibly spatter a strongly acidic solution. Consider immersing your mixing vessel in a bucket of ice to control the solution temperature. Always add the acid to water very slowly while stirring continuously.
See free How To video at flinnsci.com.
Talc
talcum, hydrous magnesium silicate laboratory grade, powder
3MgO•4SiO2•H2O
T0001
500 g
$10.90
Continued on next column.