Products Name

CAS No.

Index

Remarks

MENTHOL

2216-51-5

More Information

India import

MENTHOL

2216-51-5

More Information

India import

Diltiazem Hydrochloride

33286-22-5

Codex

India import, Get IDL

TESTS

REQUIREMENTS

1

Description

Clear, colourless melted solid or milky paste having pure peppermint like odour.

2

Solubility

Very soluble in ethanol (70%) and ether, freely soluble in light liquid paraffin, in glacial acetic acid and in volatile oils. slightly soluble in water.

3

Identification
by chemical

Reaction with sulphuric acid and with the addition of solution of vanillin in sulphuric acid should produce orange colour. Further addition of water should change the colour to violet.

4

Specific optical rotation
(10% w/v soln. in ethanol 95%)

Between -47.0°to -51.0°
-47.0°- 51.0°

5

melting range

Between 38℃to 42℃
38℃ - 42℃

6

Purity(by GC)
L-menthol
Total menthol

Not less than 96.0%
Not less than 97.0%

7

Residue on evaporation

Not more than 0.05% w/w

No.

TESTS

REQUIREMENTS

1

Description

Colourless, fine powder or infused masses or crystalline powder, odour, pleasant and characteristic.

2

Solubility

Very soluble in ethanol(95%) and ether, freely soluble in light liquid paraffin, in glacial acetic acid and in volatile oils. slightly soluble in water.

3

Identification
(1)by IR

(2)by chemical

The IR absorption spectrum is concordant with the reference spectrum of menthol or with the spectrum obtained from menthol RS.

a. Dissolve 10mg in 1ml of sulfuric acid and add 1ml of 1% w/v soln of vanillin in sulfuric acid, and orange yellow colour is produce. Add 1ml of water, the coulour change to violet.(distinction from thymol.)
b. When triturated with about an equal weight or camphor or chloral hydrate or phenol the mixture liquefies.
c. Melt between 41℃and 44℃

4

Specific optical rotation
(10% w/v soln. in ethanol 95%)

Between -49.0°to -51.0°

5

Congealing range

Between 27℃to 28℃
27℃ -28℃

6

Acidity

Should comply

7

Clarity and colour of solution

Should comply

8

Related substance

Not more than 0.01%
Not mare than 1.00%

9

Residue on evaporation

Not more than 0.05% w/w

No

Product

4-BromoToluene

1

Appearance:

Clear water white liquid

2

Boiling Point:

184℃

3

Density

1.39

4

Assay(by GC)

99.9% min

5

Water Contents

0.2% max

6

2-Bromo Toluene

0.1%max

7

3-Bromo Toluene

0.1% max

8

Di-Bromo Toluene

0.1% max