Synthesis and use of indigo

VC2.4.1.1
Synthesis and use of indigo
Synthesis and use of indigo

This product is classified as a dangerous good and is not available for online purchase.

For ordering the dangerous good or other information please contact our customer service center.
This experiment/set up contains dangerous goods.
These are not available for online purchase.
You may order the experiment/set up without the dangerous goods.


For ordering the dangerous good or other information please contact our customer service center.
Email: webshopuk@ld-didactic.de
Telephone:+49 (0) 22 33 / 604 – 319
Go to contact form

˟

Request an offer

Thank you for your inquiry. We will get back to you as soon as possible.

˟

Description

Indigo, a dye, can be produced in a simple organic synthesis. In so doing, o-nitrobenzaldehyde reacts with acetone in a condensation reaction to form isatin. That dimerises into finished indigo. Indigo is not water soluble and can simply be filtered out after the reaction. In experiment C2.4.1.1, this reaction is carried out and the finished indigo is used as a dye.

Components of equipment sets

1 664246  4  Erlenmeyer flask, DURAN, 100 ml, wide neck LD
1 665212  4  Glass stirring rod 200 x 8 mm Ø LD
1 665162  4  Büchner funnel, 70 mm diam. LD
1 661031  4  Round filter, Type 595, 70 mm diam., 100 pcs. LD
1 665060  4  Rubber collars, set of 7 LD
1 664866  4  Suction flask, 500 ml, glass LD
1 666967  4  Spoon-ended spatula, stainless steel, 150 mm LD
1 665751  4  Measuring cylinder 10 ml, with plastic base LD
1 665996  4  Graduated pipette, 5 ml LD
1 666003 Pipetting ball (Peleus ball) LD
1 664101  4  Beaker, DURAN, 100 ml, squat LD
1 6677977 Electronic Balance 440-3N, 200 g : 0.01 g LD
1 37556  4  Water jet pump LD
1 667186  4  Vacuum rubber tubing, 8 mm diam. LD
1 6739390  4  2-Nitrobenzaldehyde, 5 g LD
GHS07 Warning H302 H315 H319 H335
1 6700410  4  Acetone, 1 l LD
GHS02GHS07 Danger H225 H319 EUH066 H336
1 6738420  4  Sodium hydroxide solution, 1 mol/l, 500 ml LD
GHS05 Danger H314 H290
1 6719711  4  Ethanol, absolute, 500 ml LD
GHS02GHS07 Danger H225 H319
1 additionally required:
white cotton cloth

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C2.4.1.1 Synthesis and use of indigo
Print page

Contact Us

We are represented by agencies throughout the world.

Worldwide
For the address of your local distributor, please contact us per email:
sales@ld-didactic.de
Europe
For European distributors, please visit: European distributors
Technical Service-Hotline
Click here for our contact form and postal address.

Contact Us