Yellow 33 CAS 232-318-2
| Risk Codes | R22 – Harmful if swallowed R36/37/38 – Irritating to eyes, respiratory system and skin. R36/38 – Irritating to eyes and skin. |
| Safety Description | S24/25 – Avoid contact with skin and eyes. S36 – Wear suitable protective clothing. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 – Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| RTECS | GC5796000 |
Introduction
Solvent yellow 33 is an organic solvent dye with an orange-yellow color, and its chemical name is bromophenol yellow. Solvent Yellow 33 has the following properties:
1. Color stability: solvent yellow 33 is dissolved in organic solvent at room temperature, showing an orange-yellow solution, with good color stability.
2. Solubility: solvent yellow 33 is soluble in organic solvents such as alcohols, ketones, esters, aromatics, etc., but insoluble in water.
3. High solvent resistance: Solvent yellow 33 has high solubility in solvents and has good solvent resistance.
The main uses of solvent yellow 33 include:
1. Dye pigments: As organic solvent dyes, solvent yellow 33 is often used in coatings, inks, plastics, rubber, fibers and other fields to give products orange yellow.
2. Dye intermediate: solvent yellow 33 can also be used as a dye intermediate, which can be used as a raw material for the synthesis of other pigment dyes.
Common methods for the preparation of solvent yellow 33 are:
1. Synthesis method: solvent yellow 33 can be prepared by bromine in phenol bromination, and then acidification, sulfonation, alkylation and other multi-step reactions.
2. Oxidation method: the raw material of solvent yellow 33 is oxidized with oxygen in the presence of a catalyst to generate solvent yellow 33.
The safety information of solvent yellow 33 is as follows:
1. Solvent yellow 33 has a certain degree of sensitization, may cause allergic reactions, irritating effect on the skin and eyes, and appropriate protective equipment must be worn.
2. During use, avoid inhaling the dust or liquid of solvent yellow 33, and avoid contact with skin and eyes.
3. In case of accidental contact with solvent yellow 33, rinse the affected area immediately with plenty of water.
4. Solvent yellow 33 should be stored in a cool, dry and well-ventilated place to avoid contact with oxidants, acids, alkalis and other substances.
