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Providing you the best range of bentonite -jp/ usp, purified siliceous earth / diatomaceous earth usp/nf and with effective & timely delivery.

BENTONITE -JP/ USP

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Approx. Rs 16 / KgGet Latest Price

Product Details:

BrandMLA Group of Industries
Packaging Size25 Kg
GradePharma
ApplicationPharma

Test and Method

Specification

Identification Test A (JP)

Add 0.5g of Bentonite to 3 mL of diluted sulfuric acid (1 in 3), and heat until white fumes are evolved. Cool, add 20 mL of water, and-filter. To 5 mL of the filtrate add 3 mL of ammonia TS: a-white, gelatinous precipitate is produced, which turns red on the addition of 5 drops of alizarin red S TS.

Identification Test A (USP)

Add 2 g in small portions to 100 mL of water, with intense agitation. Allow to stand for 12 hours to ensure complete hydration. Place 2 mL of the mixture so obtained on a suitable glass slide, and allow to air-dry at room temperature to produce an oriented film. Place the slide in a vacuum desiccator over a free surface of ethylene glycol. Evacuate the desiccator, and close the stopcock so that the ethylene glycol saturates the desiccator chamber. Allow to stand for 12 hours. Record the X-ray diffraction pattern and calculate the d values: the largest peak corresponds to a d value between 15.0 and 17.2 angstrom units. Prepare a random powder specimen of Bentonite, record the X-ray diffraction pattern, and determine the d values in the region between 1.48 and 1.54 angstrom units: the peak is between 1.492 and 1.504 angstrom units.

Identification Test  B (JP)

Wash the residue obtained in (1) with water, add 2 mL of a solution of methylene blue trihydrate (1 in 10,000), and wash again with water: the residue is blue in color

Identification Test  B (USP)

Record the X-ray diffraction pattern (see X-ray Diffraction 941 ), and calculate the d values: the largest peak corresponds to a d value between 15.0 and 17.2 angstrom units. Prepare a random powder specimen of Bentonite, record the X-ray. diffraction pattern, and determine the d values in the region between 1.48 and 1.54 angstrom units: the peak is between 1.492 and 1.504 angstrom units.

pH(JP)

9 - 10.5

pH(USP)

9.5 - 10.5

Heavy Metal(JP)

NMT 50 ppm

Arsenic(JP)

 NMT 2 ppm

Arsenic(USP)

NMT 5 ppm

Foreign Matter(JP)

No grit is felt when the fingers are rubbed over the wire mesh of the sieve.

Loss on Drying(JP)

5.0 - 10.0 %   (2 g, 105°C, 2 hours)

Loss on Drying(USP)

Dry it at 105 for 2 hours: it loses between 5.0% and 8.0% of its weight


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PURIFIED SILICEOUS EARTH / DIATOMACEOUS EARTH USP/NF

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Approx. Rs 20 / KilogramGet Latest Price

Product Details:

GradePharma
Packaging Size25 Kg
BrandMLA Industries
Country of OriginMade in India

Test and Method

Specification

Loss on drying(USP)

Dry it at 105 for 2 hours: it loses not more than 0.5% of its weight

Loss on ignition(USP)

@  980 ± 25 for 1 hour not more than 2.0%

Acid-soluble substances(USP)

The weight of the dried residue so obtained does not exceed 200 mg (2.0%)

Water-soluble substances(USP)

The weight of the residue does not exceed 25 mg (0.2%)

Leachable arsenic(USP)

Max. 0.001%.

Leachable lead(USP)

Max. 0.001%.

Limit of non siliceous substances(USP)

The weight of the residue so obtained does not exceed 50 mg

Residual solvents(USP)

meets the requirements


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Test and Method

Specification

Identification Test A(USP)

Heat 1 g with a mixture of 25 mL of water and 5 mL of hydrochloric acid for 1 hour, replacing the water as it evaporates: fatty acids are liberated, floating as an oily layer on the surface of the liquid, and the water layer responds to the tests for Aluminium<191>

Identification Test B(USP)

the solidification temperature of the fatty acids is not below 54 deg C

Identification Test A(JP)

Heat 3g of Aluminum Monostearate with 30 mL of hydrochloric acid in a water bath with occasional shaking for 10 minutes. After cooling, shake the mixture vigorously with 50 mL of water and 30 mL of diethvl ether for 3 minutes, and allow to stand. To the separated aqueous layer add sodium hydroxide TS until the solution becomes slightly zturbid, and filter: the filtrate responds to the Qualitative Tests <1.09> for aluminum salt

Identification Test B(JP)

Wash the diethyl ether layer separated in (1) with two 20-mL portions of water, and evaporate the diethyl ether layer on a water bath: the residue melts at above 54*C

Loss On Drying(USP/JP)

NMT 3 % ,105 deg C for 3 Hours

Arsenic(USP)

NMT 4 ppm

Arsenic(JP)

NMT 2 ppm

Heavy Metals(USP)

NMT 50 μg per g.

Heavy Metals(JP)

NMT 50 ppm

ASSAY(USP)

14.5% - 16.5% on the dried basis

ASSAY(JP)

Weigh accurately about 1 g of Aluminum Monostearate, previously dried, ignite gently to ash, and cool. Add drop wise 0.5 mL of nitric acid, evaporate on a water bath by heating, and then heat strongly between 900'C and 1100'C to a constant mass. After cooling, weigh rapidly the ignited residue, and designate the mass as aluminum oxide.                                                                    Amount (mg) of aluminum (Al) = amount (mg) of aluminum oxide × 0.529

Content of Stearic Acid(USP)

NLT 40%

Sum of Stearic acid+ Palmitic Acid(USP)

NLT90%

Acidity /Alkalinity(USP)

NMT 0.5 mL of 0.01 N hydrochloric acid or 0.01 N sodium hydroxide is required to change the color of the indicator.


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