Calcium Hydroxide Pure & BP USP ACS Analytical Reagent FCC Food grade Manufacturers, Ca(OH)2 |
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Synthetic Calcium Hydroxide is also offered
Calcium Hydroxide Manufacturers
MSDS of Calcium Hydroxide BP USP IP FCC ACS Analytical Reagent Food grade Manufacturers
Calcium Hydroxide
Technical & Pure Slaked Lime, Hydrated Lime
Also IP BP Ph. Eur. USP ACS AR LR FCC Food Grades
| Grades | A1++ ___ A1+ |
| % of available lime as Ca(OH)2 | 96±1 ___ 94 |
| Active CaO(%) | 72.5 ___ 71 |
| Acid insolubles (max.)% | 0.10 ___ 0.2 |
| Iron | 150ppm _ 200ppm |
| Alumina | - In traces --- |
| Magnesia as MgO (max.)% | 0.5 ____ 0.55 |
| Mesh (BSS) | 500 ____ 400 |
British Pharmacopoeia
Specifications of Calcium Hydroxide BP Ph Eur British Pharmacopoeia
Ca(OH)2 ... 74.1
PreparationCalcium Hydroxide Solution
DEFINITION
Content: 95.0 per cent to 100.5 per cent.
CHARACTERS
Appearance: White or almost white, fine powder.
Solubility: Practically insoluble in water.
IDENTIFICATION
A. To 0.80 g in a mortar, add 10 ml of water R
and 0.5 ml of phenolphthalein solution and mix. The suspension turns red.
On addition of 17.5 ml of 1 M hydrochloric acid , the suspension becomes
colourless without effervescing. The red colour occurs again when the mixture is
triturated for 1 min. On addition of a further 6 ml of 1 M hydrochloric acid
and triturating, the solution becomes colourless.
B. Dissolve about 0.1 g in dilute hydrochloric acid
and dilute to 10 ml with water . 5 ml of the solution give reaction
of calcium.
TESTS
Matter insoluble in hydrochloric acid: Maximum 0.5 per cent.
Dissolve
2.0 g in 30 ml of hydrochloric acid. Boil the solution and filter. Wash
the residue with hot water. The residue weighs a maximum of 10 mg.
Carbonates: Maximum 5.0
per cent of CaCO3.
Chlorides: Maximum 330
ppm.
Sulphates: Maximum 0.4
per cent.
Arsenic: Maximum 4
ppm.
Magnesium and alkali metals: Maximum 4.0
per cent calculated as sulphates.
Heavy
metals: Maximum 20
ppm.
ASSAY
To 1.500 g
in a mortar, add 20-30 ml of
water R and 0.5 ml of phenolphthalein solution. Titrate with 1
M hydrochloric acid by triturating the substance until the red colour
disappears. The final solution is used in the tests for carbonates.
1 ml of
1 M hydrochloric acid
is equivalent to 37.05 mg of Ca(OH)2.
Calcium Hydroxide USP Ca(OH)2
Lime
Ca(OH)2 74.09
[1305-62-0].
Calcium Hydroxide contains not less than 95.0 percent and not more than
100.5 percent of Ca(OH)2.
Packaging and storage Preserve in tight containers.
Identification
A: When mixed with from three to four times its weight of water, it forms a
smooth magma. The clear, supernatant from the magma is alkaline to litmus.
B: Mix 1 g with 20 mL of water, and add sufficient 6 N acetic acid to effect
solution: the resulting solution responds to the tests for Calcium.
Limit of acid-insoluble substances Dissolve 2.0 g in 30 mL of 4 N
hydrochloric acid, and heat to boiling. Filter the mixture, wash the residue
with hot water, and ignite: the weight of the residue does not exceed 10 mg
(0.5%).
Carbonate Mix 2 g with 50 mL of water: the addition of an excess of
3 N hydrochloric acid to the mixture does not cause more than a slight
effervescence.
Heavy metals Dissolve 2.0 g in 20 mL of 3 N hydrochloric acid, and
evaporate on a steam bath to dryness. Dissolve the residue in 20 mL of
water, and filter. Dilute the filtrate with water to 40 mL, and to 20 mL of
the resulting solution add 1 mL of 0.1 N hydrochloric acid, then add water
to make 25 mL: the limit is 20 6g per g.
Limit of magnesium and alkali salts Dissolve 0.50 g in a mixture of
30 mL of water and 10 mL of 3 N hydrochloric acid, and proceed as directed
in the test for Magnesium and alkali salts under Calcium Carbonate,
beginning with heat the solution, and boil for 1 minute. The weight of the
residue does not exceed 12 mg (4.8%).
Assay Transfer about 1.5 g of Calcium Hydroxide, accurately weighed,
to a beaker, and gradually add 30 mL of 3 N hydrochloric acid. When the
solution is dissolved, transfer it to a 500-mL volumetric flask, rinse the
beaker thoroughly, adding the rinsing to the flask, dilute with water to
volume, and mix. Pipette 50 mL of the solution into 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 edentate disodium VS to a blue
endpoint. Each mL of 0.05 M edetate disodium is equivalent to 3.705 mg of
Ca(OH)2.
Calcium Hydroxide FCC
Slaked LimeCa(OH)2 Formula wt 74.10
INS: 526 CAS: [1305-62-0]
DESCRIPTION
Calcium
Hydroxide occurs as a white powder. One gram dissolves in 630 mL of water at
25°, and in 1300 mL of boiling water. It is soluble in glycerin and in a
saturated solution of sucrose but insoluble in alcohol.
Function: Buffer; neutralizing agent; firming agent.
REQUIREMENTS
Identification
A. Mix a
sample with from 3 to 4 times its weight of water. The sample forms a smooth
magma. The clear, supernatant liquid from the magma is alkaline to litmus.
B. Mix 1 g
of sample with 20 mL of water, and add sufficient glacial acetic acid to effect
solution. The resulting solution gives positive tests for Calcium.
Assay: Not less than 95.0% and not more
than 100.5% of Ca(OH)2.
Acid-Insoluble Substances: Not more
than 0.5%.
Arsenic: Not more than 3 mg/kg.
Carbonate: Passes test.
Fluoride: Not more than 0.005%.
Lead: Not more than 2 mg/kg.
Magnesium and Alkali Salts: Not
more than 4.8%.
Calcium Hydroxide ACS
Ca(OH)2Formula Wt 74.09
CAS Number 1305-62-0
REQUIREMENTS
Assay: 95.0%
Ca(OH)2 and 3.0%
CaCO3
MAXIMUM ALLOWABLE
Insoluble in hydrochloric acid: 0.03%
Chloride (Cl): 0.03%
Sulfur compounds (as SO4): 0.1%
Heavy metals (as Pb): 0.003%
Iron (Fe): 0.05%
Magnesium (Mg): 0.5%
Potassium (K): 0.05%
Sodium (Na): 0.05%
Strontium (Sr): 0.05%
Synthetic Precipitated Calcium Hydroxide
Please enquire by specifying your desired specifications
Calcium Hydroxide BP USP Slaked Lime Hydrated Lime Manufacturers;
Muby Chem Ltd.
Toll manufacturing & Warehouse at Houston & Midland, Texas, USA and India
USA, Canada, Mexico Customers may e-mail: usa@mubygroup.com
Call 1-844-682-9243
Europe Africa Asia India Mumbai e-mail: info@mubygroup.com
Call +91-22-23774610
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