Samples and their optical rotation angle value α [°]
Polarimeters are modern, highly selective and offer mainly very fast measurements in many areas of analysis. Polarimeters measures the angle of rotation of optically active substances. The measurement results are important for quality control in the production of active pharmaceutical ingredients and also for checking the identity of chiral substances in incoming and outgoing goods laboratories. In food, starches or sugar industries, polarimeters are used to test concentrations or purity. Every industry has different needs and requirements for this type of measuring technology. We meet them with a wide range of different models and measuring tubes.
Which substances can even be detected?
In the following you will find a comprehensive overview of samples and their specific angle of rotation. Most of the results are valid for standard measuring conditions (T=20 °C and λ = 589 nm), deviations are indicated.
Sample overview
| Sample | Value α [°] | Measured at °C | λ [nm] |
|---|---|---|---|
| A | |||
| Aconitine | + 14° → + 19° | 20 °C | 589 nm |
| (L)-Ascorbic acid | + 22° | 20 °C | 589 nm |
| Atropine sulfate | - 0.5° → + 0.1° | 20 °C | 589 nm |
| B | |||
| (D)-2-Bromobutane | + 23.1° | 20 °C | 589 nm |
| (L)-2-Bromobutane | - 23.1° | 20 °C | 589 nm |
| C | |||
| Campher | + 54.4° | 20 °C | 589 nm |
| (D)-Carvone (Spearmint) | - 61° | 20 °C | 589 nm |
| (L)-Carvone (Caraway) | + 61° | 20 °C | 589 nm |
| (+)-Cavicularin | + 168.2° | 20 °C | 589 nm |
| Cholesterol | - 31.5° | 20 °C | 589 nm |
| D | |||
| Dextroamphetamine solution 4 % | + 20° → + 23.5° | 20 °C | 589 nm |
| Dextroamphetamine solution 8 % | + 19.5° → + 22° | 20 °C | 589 nm |
| Dexpanthenol | + 29° → + 32° | 20 °C | 589 nm |
| (D)-Lactic acid | - 2.6° | 20 °C | 589 nm |
| D (-) - Fructose | - 89.5° | 20 °C | 589 nm |
| D(+)-Glucose | + 52.5° | 20 °C | 589 nm |
| D (+) - Lactose | + 52.3° | 20 °C | 589 nm |
| D (+) - Limonene | + 125.6° | 20 °C | 589 nm |
| D(+)-Saccharose | - 66.5° | 20 °C | 589 nm |
| (D)-Tartaric acid | + 12.4° | 20 °C | 589 nm |
| F | |||
| Folic acid | + 18° → + 22° | 20 °C | 589 nm |
| G | |||
| Globoli Sacchari | + 66.3 → + 67° | 20 °C | 589 nm |
| H | |||
| Hydrocortisone | + 168° | 20 °C | 589 nm |
| Hydrocortisone acetate | + 167° | 20 °C | 589 nm |
| I | |||
| Inverted sugar | - 19.7° | 20 °C | 589 nm |
| Iopamidol | - 5.2° → - 4.6° | 20 °C | 436 nm |
| L | |||
| Lactose | + 52.3° | 20 °C | 589 nm |
| Levocarnitine | - 32° → - 29° | 20 °C | 589 nm |
| (L)-Lactic acid | + 2.6° | 20 °C | 589 nm |
| (L)-Tartaric acid | - 12.4° | 20 °C | 589 nm |
| M | |||
| Mint oil | - 34° → - 16° | 20 °C | 589 nm |
| Metaraminol bitartrate | - 33.5 → - 31.5° | 20 °C | 405 nm |
| Methyldopate hydrochloride | - 14.9 → - 13.5° | 20 °C | 405 nm |
| Metirosin (Metyrosin) | + 185° → + 195° | 20 °C | 546 nm |
| O | |||
| Octyldodecanol | - 0.1° → + 0.1° | 20 °C | 589 nm |
| Orange peel oil | + 95° | 20 °C | 589 nm |
| P | |||
| Paclitaxel (Taxol) | - 49° | 20 °C | 589 nm |
| Penicillin V | + 223° | 20 °C | 589 nm |
| (-)-Phenylephrine hydrochloride | - 47° → - 43° | 20 °C | 589 nm |
| Physostigmine | - 246° → - 236° | 20 °C | 365 nm |
| S | |||
| D(+)-Saccharose | - 66.5° | 20 °C | 589 nm |
| Sorbitol solution | + 1.5° → + 3.5° | 20 °C | 589 nm |
| Sorbitol | + 4° → + 7° | 20 °C | 589 nm |
| T | |||
| Timolol maleate | - 12.5° → - 11.7° | 20 °C | 405 nm |
| V | |||
| Vitamin D (in Acetone) | + 82.6° | 20 °C | 589 nm |
| Vitamin D (in Chloroform) | + 52° | 20 °C | 589 nm |
| Vitamin D (in Ethanol) | + 102.5° | 20 °C | 589 nm |
| Vidarabine (sterile) | - 65° → - 56° | 20 °C | 365 nm |
| All nm values have been compiled with best accuracy, but this information is supplied without liability. | |||
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