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Here's a concise summary of Solvent Blue 36:
Solvent Blue 36 is a synthetic anthraquinone-based solvent dye. Its chemical name is 1,4-Bis(butylamino)anthraquinone (CAS 68921-42-6, Formula C₂₂H₂₆N₂O₂).
Key Properties:
Appears as a dark blue powder.
Soluble in organic solvents (alcohols, ketones, hydrocarbons), insoluble in water.
Offers good heat stability and lightfastness.
Primary Uses: It's widely employed to color non-polar materials:
Plastics (PS, PC, PMMA, ABS)
Solvent-based inks (pens, printing)
Coatings, waxes, lubricants, fuels.
Safety: Generally considered non-hazardous, but standard chemical handling precautions (avoid inhalation/contact) apply. Common trade names include Macrolex Blue RR and Ceres Blue GN.
Solvent Blue 36 is a synthetic anthraquinone-based solvent dye with the following key chemical characteristics:
Chemical Name:
1,4-Bis(butylamino)anthraquinone
9,10-Anthracenedione, 1,4-bis(butylamino)- (IUPAC)
CAS Registry Number: 68921-42-6
Molecular Formula: C₂₂H₂₆N₂O₂
Molecular Weight: 350.46 g/mol
Chemical Structure:
Based on the anthraquinone core (a tricyclic aromatic structure with two ketone groups).
Has two alkylated amino groups (-NH-R) attached at the 1 and 4 positions.
The alkyl groups (R) are n-butyl (-CH₂-CH₂-CH₂-CH₃).
Structure: [1-(Butylamino)-4-(butylamino)anthracene-9,10-dione]
O
║
╔═══╩═══╗
║ ║
(HN-Bu) (HN-Bu)
║ ║
╚═══╦═══╝
║
O
(Where Bu = n-Butyl, -CH₂CH₂CH₂CH₃)
Key Properties:
Appearance: Typically a dark blue powder or granules.
Solubility: Soluble in a wide range of organic solvents (e.g., alcohols, ketones, esters, chlorinated hydrocarbons, aromatic hydrocarbons). Insoluble in water.
Melting Point: ~165-170 °C
Stability: Good thermal stability and lightfastness (common for anthraquinone dyes).
Function: A solvent dye, meaning its primary application is coloring non-polar or weakly polar organic materials (solvents, oils, waxes, plastics, fuels) where it dissolves molecularly.
Primary Applications:
Plastics: Coloring polystyrene (PS), polycarbonate (PC), polymethyl methacrylate (PMMA), ABS, PET, and others.
Inks: Solvent-based inks, ballpoint pen inks, inkjet inks, flexographic inks.
Coatings: Industrial paints, lacquers, wood stains.
Oils & Lubricants: Coloring automotive and industrial oils.
Waxes & Candles.
Fuels: Marking fuels.
Synonyms & Trade Names: Numerous, including: Macrolex Blue RR (Lanxess), Ceres Blue GN (BASF), Orasol Blue GN (BASF), Plast Blue 8510, Waxoline Blue AP-FW, Neoplast Blue G, etc.
Safety & Handling:
Classified as non-hazardous in many contexts, but standard precautions for handling fine powders and chemicals should be observed (avoid inhalation, skin/eye contact).
Its insolubility in water limits aquatic mobility, but proper disposal is always required.
Always consult the specific Safety Data Sheet (SDS) for the product in use. Compliant with regulations like EU REACH.
In summary: Solvent Blue 36 is chemically defined as 1,4-Bis(butylamino)anthraquinone (C₂₂H₂₆N₂O₂), a blue anthraquinone dye prized for its solubility in organic solvents and stability, used extensively to color plastics, inks, coatings, and oils.
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