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Solvent Green 3(CAS#128-80-3)

Chemical Property:

Molecular Formula C28H22N2O2
Molar Mass 418.49
Density 1.1816 (rough estimate)
Melting Point 220-221 °C
Boling Point 536.24°C (rough estimate)
Flash Point 197°C
Water Solubility 10μg/L at 25℃
Solubility Acetone (Slightly), DMSO (Slightly), Methanol (Slightly)
Vapor Presure 0Pa at 25℃
Appearance Black powder
Color Very Dark Purple
Merck 14,8065
pKa -0.02±0.20(Predicted)
Storage Condition Keep in dark place,Inert atmosphere,Room temperature
Refractive Index 1.5800 (estimate)
MDL MFCD00001195
Physical and Chemical Properties Melting Point: 220-221°C
Use Mainly used for polyester fiber pulp coloring, can also be used for the manufacture of polyester color masterbatch

Product Detail

Product Tags

Risk and Safety

Hazard Symbols Xi - Irritant
Risk Codes 36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description S24/25 - Avoid contact with skin and eyes.
S22 - Do not breathe dust.
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany 2
RTECS CB5775000
HS Code 32041200

 

 

Solvent Green 3(CAS#128-80-3)

Brief introduction
Solvent Green 3 is an organic synthetic dye with the chemical name Methanyl Green 3. The following is a description of the properties, uses, preparation methods and safety information of solvent green 3:

Quality:
Solvent Green 3 is a powdered crystalline substance, often dark green in color. It has good solubility in water and is also soluble in organic solvents such as alcohols and ether solvents. It also exhibits strong light absorption, especially in the visible region.

Use:
Solvent Green 3 is mainly used as a dye in biological laboratories. It can be used to stain cell, bacterial, and tissue samples for easy observation, research, and analysis. Solvent Green 3 can also be used to print and dye textiles.

Method:
Solvent green 3 can be prepared by synthetic methods. A common method is to react dibenzamide with sodium nitrite under alkaline conditions and then add formic acid to make solvent green3.

Safety Information:
Solvent Green 3 is a relatively safe compound, but the following should still be noted:
Avoid inhaling dust or solutions when using it, and wear appropriate personal protective equipment;
Avoid contact with skin and eyes, and rinse immediately with plenty of water if contacted;
When using and storing, it should be kept away from fire sources and kindling, and avoid contact with oxidants;
Follow safe laboratory operating procedures and dispose of waste properly. If necessary, refer to the Safety Data Sheet of Solvent Green 3 for more detailed safety information.

Application

Solvent Green 3 (Quinizarine Green SS, CI 61565, CAS 128-80-3) is an anthraquinone dye valued for its brilliant bluish-green shade, excellent transparency, and high tinctorial strength. It exhibits outstanding solubility in organic solvents, good heat resistance, excellent lightfastness, and strong migration resistance. In the plastics industry, it is widely used for coloring transparent resins such as PS, ABS, PMMA, PC, PET, PVC, and engineering polymers, enabling superior color consistency in injection molding and masterbatch production. In printing and packaging, Solvent Green 3 is formulated into rotogravure, flexographic, and offset inks, as well as aluminum foil printing, varnishes, and wood stains. It is also employed in industrial coatings, solvent-based paints, lubricants, waxes, and hydrocarbon fuels. For personal care, this non-toxic dye is approved for externally applied cosmetics and medications, including liquid soaps, shampoos, lotions, and skin creams. Additionally, it is used in smoke formulations for training and entertainment purposes. Xinchem offers custom synthesis, custom chemical synthesis, and contract manufacturing of high-purity Solvent Green 3 with flexible scaling from R&D to commercial tons. Contact us for a competitive quote and reliable global supply.


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