Vat Orange 7 CAS 4424-06-0
| RTECS | DX1000000 |
| Toxicity | LD50 intraperitoneal in rat: 520mg/kg |
Introduction
Vat orange 7, also known as methylene orange, is an organic synthetic dye. The following is an introduction to the nature, use, preparation method and safety information of Vat Orange 7:
Quality:
- Appearance: Vat orange 7 is an orange crystalline powder, soluble in alcohol and ketone solvents, slightly soluble in water, and the solution can be obtained through solvents such as chloroform and acetylacetone.
Use:
- Vat orange 7 is an organic dye widely used in the dye and pigment industry.
- It has good coloring ability and thermal stability, and is commonly used in textile, leather, ink, plastic and other fields.
Method:
- The preparation method of reduced orange 7 is usually obtained by reacting nitrous acid and naphthalene.
- Under acidic conditions, nitrous acid is reacted with naphthalene to produce N-naphthalene nitrosamines.
- Then, N-naphthalene nitrosamines are reacted with an iron sulfate solution to rearrange and produce reduced oranges7.
Safety Information:
- Avoid direct contact with eyes, skin, and respiratory tract, and rinse immediately with plenty of water in case of accidental contact.
- Wear protective glasses and gloves to avoid inhaling dust or solutions during operation.
- Store Vat Orange 7 in a dry, cool place, away from fire and oxidants.
