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Soda Lime
CAS Number: 8006-28-8
Soda Lime
Soda Lime Analytical Reagent Specifications
CAS Number 8006-28-8
NOTE. Soda lime is a mixture of variable proportions of sodium hydroxide with calcium oxide or hydroxide. This reagent may or may not include an indicator.
REQUIREMENTS
Carbon dioxide absorption capacity: 19.0%
MAXIMUM ALLOWABLE
Loss on drying at 200C: 7%
Fines: 1%
Soda Lime USP NF Specifications
Soda Lime is a mixture of Calcium Hydroxide and Sodium or Potassium Hydroxide or both.
It may contain an indicator that is inert toward anesthetic gases such as Ether, Cyclopropane etc. and that changes color when the Soda Lime no longer can absorb Carbon Dioxide.
Identification:
A: Place a granule of it on a piece of moistened red litmus paper: the paper turns blue immediately.
B: A solution in 6 N acetic acid responds to the tests for Calcium 191 . It also imparts a yellow color to a non-luminous flame that, when viewed through cobalt glass, may show a violet color.
Loss on drying: Weigh accurately, in a tarred weighing bottle, about 10 g, and dry at 105 for 2 hours: it loses between 12.0% and 19.0% of its weight.
Moisture absorption: Place about 10 g in a tarred, 50-mL weighing bottle, having a diameter of 50 mm and a height of 30 mm, and weigh. Then place the bottle, with cover removed, for 24 hours in a closed container in which the atmosphere is maintained at 85% relative humidity by being in equilibrium with sulfuric acid having a specific gravity of 1.16. Weigh again: the increase in weight is not more than 7.5%.
Hardness: Screen 200 g on a mechanical sieve shaker having a frequency of oscillation of 285 ± 3 cycles per minute, for 3 minutes, to remove granules both coarser and finer than the labeled particle size. Proceed as directed in the test for Hardness under Barium Hydroxide Lime, beginning with “Weigh 50 g of the granules.” The percentage of Soda Lime retained on the screen is not less than 75.0, and represents the hardness.
Carbon dioxide absorbency: Fill the lower transverse section of a U-shaped drying tube of about 15-mm internal diameter and 15-cm height with loosely packed glass wool. Place in one arm of the tube about 5 g of anhydrous calcium chloride, and accurately weigh the tube and the contents. Into the other arm of the tube place 9.5 g to 10.5 g of Barium Hydroxide Lime, and again weigh accurately. Insert stoppers in the open arms of the U-tube, and connect the side tube of the arm filled with Barium Hydroxide Lime to a calcium chloride drying tube, which in turn is connected to a suitable source of supply of carbon dioxide. Pass the carbon dioxide through the U-tube at a rate of 75 mL per minute for 20 minutes, accurately timed. Disconnect the U-tube, cool to room temperature, remove the stoppers, and weigh. The increase in weight is not less than 19.0% of the weight of Soda Lime used for the test.
Particle size: Screen 100 g for 5 minutes as directed, using a mechanical shaker. It passes completely through a No. 2 standard-mesh sieve, and not more than 2.0% passes through a No. 40 standard-mesh sieve. Not more than 7.0% is retained on the coarse-mesh sieve, and not more than 15.0% passes through the fine-mesh sieve designated on the label (as agreed between the buyer and the seller.
We also supply Soda Lime of BP Ph Eur Grade.
Please visit SDS Safety Data Sheet of Soda Lime Suppliers.
American Molecules, also known as ammol.org is a distributor, supplier and manufacturers' representative of all types of Pharmaceuticals, Functional Ingredients, Excipients and Specialty Chemicals in Texas USA. Our principals manufacture supply and export USP NF BP, Ph Eur, etc grades of chemicals pure and reagent grade, mineral fortifiers, FCC food grade. Tailor made particle size and customized specifications are offered. The principal's facility is having one or more of the certifications like FDA approval and GLP, cGMP, ISO9001, ISO14001, ISO/IEC 17025, ISO22000, FSSC 22000, ISO45001, FSSAI, Kosher, HALAL, COPP, WHO-GMP certified and Written Confirmation (WC) for export to Europe is available. The manufacturers suppliers and exporters observe WHO Good Manufacturing Practices and Good Laboratory Practices.
Suppliers and Manufacturers' Representative:
9910 Bent Oak Dr
Houston, TX 77040, USA
Call Toll Free: 1-855-55-AMMOL 1-855-552-6665
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