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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

SampleValue α [°] Measured at °Cλ [nm]
A
Aconitine+ 14° → + 19° 20 °C589 nm
(L)-Ascorbic acid + 22°20 °C589 nm
Atropine sulfate - 0.5° → + 0.1° 20 °C589 nm
B
(D)-2-Bromobutane+ 23.1°20 °C589 nm
(L)-2-Bromobutane- 23.1°20 °C589 nm
C
Campher+ 54.4°20 °C589 nm
(D)-Carvone (Spearmint)- 61°20 °C589 nm
(L)-Carvone (Caraway)+ 61° 20 °C589 nm
(+)-Cavicularin+ 168.2°20 °C589 nm
Cholesterol- 31.5°20 °C589 nm
D
Dextroamphetamine solution 4 % + 20° → + 23.5° 20 °C589 nm
Dextroamphetamine solution 8 %+ 19.5° → + 22°20 °C589 nm
Dexpanthenol+ 29° → + 32°20 °C589 nm
(D)-Lactic acid - 2.6°20 °C589 nm
D (-) - Fructose- 89.5°20 °C589 nm
D(+)-Glucose+ 52.5°20 °C589 nm
D (+) - Lactose+ 52.3°20 °C589 nm
D (+) - Limonene+ 125.6°20 °C589 nm
D(+)-Saccharose - 66.5°20 °C589 nm
(D)-Tartaric acid+ 12.4°20 °C589 nm
F
Folic acid + 18° → + 22°20 °C589 nm
G
Globoli Sacchari + 66.3 → + 67°20 °C589 nm
H
Hydrocortisone+ 168°20 °C589 nm
Hydrocortisone acetate + 167°20 °C589 nm
I
Inverted sugar - 19.7°20 °C589 nm
Iopamidol- 5.2° → - 4.6°20 °C436 nm
L
Lactose + 52.3°20 °C589 nm
Levocarnitine - 32° → - 29°20 °C589 nm
(L)-Lactic acid+ 2.6° 20 °C589 nm
(L)-Tartaric acid - 12.4°20 °C589 nm
M
Mint oil - 34° → - 16°20 °C589 nm
Metaraminol bitartrate - 33.5 → - 31.5°20 °C405 nm
Methyldopate hydrochloride- 14.9 → - 13.5°20 °C405 nm
Metirosin (Metyrosin)+ 185° → + 195° 20 °C546 nm
O
Octyldodecanol- 0.1° → + 0.1° 20 °C589 nm
Orange peel oil+ 95° 20 °C589 nm
P
Paclitaxel (Taxol) - 49°20 °C589 nm
Penicillin V+ 223°20 °C589 nm
(-)-Phenylephrine hydrochloride - 47° → - 43°20 °C589 nm
Physostigmine- 246° → - 236° 20 °C365 nm
S
D(+)-Saccharose- 66.5°20 °C589 nm
Sorbitol solution+ 1.5° → + 3.5°20 °C589 nm
Sorbitol+ 4° → + 7°20 °C589 nm
T
Timolol maleate- 12.5° → - 11.7°20 °C405 nm
V
Vitamin D (in Acetone)+ 82.6°20 °C589 nm
Vitamin D (in Chloroform)+ 52°20 °C589 nm
Vitamin D (in Ethanol)+ 102.5°20 °C589 nm
Vidarabine (sterile) - 65° → - 56°20 °C365 nm
All nm values have been compiled with best accuracy,
but this information is supplied without liability.

For your free download:

Polarimeter sample (PDF, 138 KB)

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A.KRÜSS Optronic GmbH
Alsterdorfer Str. 276-278
22297 Hamburg | Germany

Tel. +49 40 5143 17-0
Fax +49 40 5143 17-60

E-Mail info@kruess.com