Interested to Buy Any Domain ? << Click Here >> for more details...
why we use only vanilline , acetanilide,& caffeine For the
Calibration of melting point appartus?
- 7 Answers
- 33182 Views
- Reddy Labs, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 ? | 50 Yes | 4 No |
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 ? | 30 Yes | 2 No |
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 | 4 No |
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 ? | 10 Yes | 3 No |
Answer / ishwar
These standards having sharp melting point.stability.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / rupesh
This standards give Linearity
& covers range between 0-300°c .Easily available in market.
| Is This Answer Correct ? | 1 Yes | 0 No |
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 ? | 2 Yes | 1 No |
what does 'n' stands for in spectroscopy?give the formula.
we are performed SOR for a particular product the limit is -6 to -10.We face particular bathes it is not meeting the specification.we performed diffrent instrument diffrent analyst we are getting diffrent diffrent results.solvent is dimethyl sulfoxide what could be the reasion
What is primary & Secondary Standard ? Give Example
how can you do the analysis of compound given to u by hplc
acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.
what is DIPE limit in residual solvent?
what is the value of pH
In the isomers,enantiomers give the only physical properties present such that no chemical properties present.
for which product require to do content uniformity? what is limit of cu?
why results are variation in same samples analysis in gc and hplc ?
how many types of Proceing methods?
In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?
Organic Chemistry 
