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why we use only vanilline , acetanilide,& caffeine For the
Calibration of melting point appartus?

Answers were Sorted based on User's Feedback



why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / sachin ghogare

These chemicals are very stable for M.P. test and covers
range between 0-300°c .Easily available in market .

Is This Answer Correct ?    47 Yes 4 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / siri

These chemicals are very stable and covers
range between 0-300°c .Easily available in market .
vanilline - 81°C to 83°C
Acetanilide - 114°C to 116°C
Phenacetin - 134°C to 136°C
Sulfanilamide - 164.5°C to 166.5°C
Sulfapyridine - 191°C to 193°C
Caffeine - 234°C to 237°C

Is This Answer Correct ?    29 Yes 2 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / s.narayana

vanilline - 81°C to 83°C (range-1.5°)
Acetanilide - 164°C to 165.7°C (range-1.0°)
Caffeine - 235.6°C to 237.5°C (range-1.0°)
All three standards starting & Ending points is within 1.5°
only.
In our operational way also it covers minimum, middle &
Maximum calibration covered.

Is This Answer Correct ?    19 Yes 3 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / ajay vishwakarma

These standard have very sharp melting point in their range
and also they are easily available in market.

Is This Answer Correct ?    9 Yes 3 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / ishwar

These standards having sharp melting point.stability.

Is This Answer Correct ?    5 Yes 0 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / rupesh

This standards give Linearity
& covers range between 0-300°c .Easily available in market.

Is This Answer Correct ?    1 Yes 0 No

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appart..

Answer / renu saini

Becoz its covers whole range of melting point 0- 300°c.it is easily avialable in market.all are usp reference standards

Is This Answer Correct ?    0 Yes 1 No

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