Calcium oxide

Calcium oxide
Product Description

Specifications of Hand-picked Quick Lime or Calcium Oxide Commercial Pure Grade:
Available lime as CaO
: >85%
Total Lime (Alkalinity): >92%
Silica: 1%
Magnesia as MgO (max)%: 1%
Metal Oxides as Fe2O3&Al2O3(max)%: 0.2%

Specifications of Calcium Oxide Powder Commercial Pure Grade
Specifications --------- Premium ----- Top --------- General
% Available lime CaO --- 90±2 -------- >85 --------- >82
Acid insolubles % ------ 0.50(Max) --- 0.8 (Max) --- 1.0 (Max)
Magnesium as MgO % ----- 0.80(Max) --- 1.0 (Max) --- 1.0 (Max)
R2O3 % ----------------- 0.15(Max) --- 0.15(Max) --- 0.15 (Max)
Mesh (BSS) ------------- 300 --------- 300 --------- 300

Lime or Quick Lime
Calcium Oxide USP
CaO 56.08

Calcium oxide USP; Lime USP

Quick Lime, when freshly ignited to constant weight, contains not less than 95.0 percent of CaO, Calcium Oxide.

Identification
A: Moisten it with water: heat is generated, and a white powder is obtained (calcium hydroxide or slaked lime). Mix the powder with 3 or 4 times its weight of water: a smooth magma of lime forms that is alkaline to litmus.
B: Slake 1 g of Lime or Calcium Oxide with 20 mL of water, and add 6 N acetic acid until the lime is dissolved: the resulting solution responds to the test for Calcium.
Loss on ignition— Ignite a portion of Quick Lime or Calcium Oxide to constant weight in a tarred platinum crucible at 1100 ± 50 C it loses not more than 10.0% of its weight.
Insoluble substances— Slake 5.0 g of Quick Lime or Calcium Oxide, then mix with 100 mL of water, followed by hydrochloric acid, drop wise, with agitation, until solution takes place: the resulting solution after boiling and cooling is acid, and when filtered through a tarred crucible, washed with water until free of chlorides, and dried at 105 for 1 hour yields not more than 50 mg of insoluble substances (1.0%).
Carbonate— Slake 1 g, mix with 50 mL of water, and decant the greater portion of the milky liquid: the addition of an excess of 3 N hydrochloric acid to the residue does not cause more than a slight effervescence.
Magnesium and alkali salts— Dissolve 500 mg in 30 mL of water and 15 mL of 3 N hydrochloric acid. Neutralize the solution with 6 N ammonium hydroxide, heat to boiling, and add ammonium oxalate TS to precipitate the calcium completely. Heat the mixture on a steam bath for 1 hour, cool, dilute with water to 100 mL, mix, and filter. To 50 mL of the filtrate add 0.5 mL of sulfuric acid, evaporate to dryness, and ignite in a tarred platinum crucible to constant weight. The weight of the residue does not exceed 9 mg.
Assay— Ignite about 1 g of Lime in a muffle furnace to constant weight, cool, weigh accurately, and dissolve in 20 mL of 3 N hydrochloric acid. Cool the solution, transfer to a 500-mL volumetric flask with the aid of water, dilute with water to volume, and mix. Transfer 50.0 mL to a suitable container, add 100 mL of water, 15 mL of 1 N sodium hydroxide, and 300 mg of hydroxy naphthol blue, and titrate with 0.05 M edetate disodium VS until the solution is deep blue in color. Each mL of 0.05 M edetate disodium is equivalent to 2.804 mg of CaO.


Anmol Chemicals

  • IN
  • 2019
    On CPHI since
  • 4
    Certificates
  • 50 - 99
    Employees
Company types
Other
Primary activities
Custom Manufacturing/Custom Synthesis
Intermediates Manufacturer
Specifications
  • CAS Registry Number
    1305-78-8
  • Supplied from
    India

Anmol Chemicals

  • IN
  • 2019
    On CPHI since
  • 4
    Certificates
  • 50 - 99
    Employees
Company types
Other
Primary activities
Custom Manufacturing/Custom Synthesis
Intermediates Manufacturer

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    Anmol Chemicals Private Limited is cGMP, GLP, ISO 9001, ISO 14001, ISO 22000, ISO/IEC 17025, FSSC 22000, FSSAI, Kosher, HALAL, EXCiPACT, WC, COPP and WHO-GMP certified. We are also registered with REACH Certified facility. We are the pioneer manufacturer and exporter of Speciality Chemicals, Pharmaceutical Actives, Excipients, Food Additives, Fragrance, and Flavors in India. Our experience of more than 47 years in the industry has led us to become the vendor of choice for our customers. We are a customer-oriented Company and works with the objective of achieving maximum customer satisfaction. Our innovative procedures and practices enable us to deliver products in a cost-efficient manner and meet customer expectations. At the same time, we are a dynamic and forward-looking organization, welcoming all customer feedback and suggestions, to improve our product quality and service level.