Solvent Blue 70

Solvent Blue 70 is a high-performance synthetic dye widely used in the coloring of hydrocarbon-based solvents, oils, waxes, plastics, and synthetic resins. It is a deep blue dye known for its excellent solubility in organic solvents and strong color strength.

TRADE NAME:

Orasol Blue GL,Zapon Blue 807,Blue HL,Technosol Blue GL

What are the core characteristics and advantages of Solvent Blue 70?

Solvent Blue 70 stands out among solvent dyes due to its comprehensive performance advantages, mainly reflected in the following aspects:

• ‍Excellent solubility: It has outstanding solubility in a variety of organic solvents. For example, the solubility in N,N-Dimethylformamide (DMF) and Diacetone Alcohol (DAA) can reach 500 g/L, and in mixed solvents, it can also reach 450 g/L. Even in common solvents such as methanol and ethanol, the solubility is 200 g/L and 150 g/L respectively . This wide solubility range makes it applicable to various solvent-based systems.
• Superior fastness properties: It exhibits excellent light fastness with a rating of 7-8 (on an 8-grade scale where 8 is the best), ensuring that dyed products maintain color stability under long-term light exposure. Its heat resistance can reach 200℃, and it can even withstand 220℃ for 30 minutes when used in baking finishes . In terms of chemical resistance, its acid and alkali resistance are both rated 4-5 (on a 5-grade scale where 5 is the best), showing good stability in most weak acid and weak alkali environments .
• Strong coloring performance: As a high-concentration dye, its coloring intensity is stable at 100±2%, with bright and vivid shades—mainly presenting yellowish blue or greenish blue powder, which can provide bright and transparent color effects for dyed substrates . Meanwhile, it has strong dyeing power, requiring a small amount of addition to achieve the desired color depth.
• Good compatibility: It has excellent compatibility with various synthetic resins and natural resins, and can be well integrated into different material systems without affecting the basic properties of the matrix .
• Environmentally friendly options available: There are environmentally friendly water-based and solvent-based liquid formulations, with a solid content of 30%, which are not only convenient to use but also meet environmental protection requirements .‍

Application:

mainly used for coating, printing inks,paper, cosmetics, textiles, plastics, leather, When used for baking finish, it can bear (within 220°C) for 30 minutes.

What requirements and precautions should be followed in different application scenarios?

The application requirements and precautions of Solvent Blue 70 vary with different scenarios, and targeted control is needed to ensure the dyeing effect and product quality:

Printing ink application

• ‍Requirements: The ink system should be matched with the solubility of the dye. For example, when using in gravure or screen printing inks, solvents with high solubility (such as MIBK or cyclohexanone) should be selected to avoid precipitation. The coloring intensity should be controlled within the range of 100±2% to ensure uniform color of the printed matter.
• Precautions: During the ink preparation process, the mixing speed should be controlled to prevent air bubbles from affecting the printing effect. The prepared ink should be used within a certain period to avoid solvent volatilization leading to changes in dye concentration.‍

Coating and baking finish application

• ‍Requirements: When used in baking finishes, the baking temperature should not exceed 220℃, and the holding time should be controlled within 30 minutes to prevent color fading caused by overheating. For water-based coatings, environmentally friendly water-based formulations of Solvent Blue 70 should be selected to ensure system compatibility.
• Precautions: The coating should be evenly applied to avoid color spots caused by uneven dye distribution. After construction, it should be dried in a well-ventilated environment to ensure the volatilization of solvents.‍

Leather and wood dyeing

• ‍Requirements: Before dyeing, the surface of leather or wood should be cleaned to remove impurities, ensuring good dye adsorption. The dye solution concentration should be adjusted according to the desired color depth, and the pH value of the dye bath should be controlled between 6.0-8.0, which is consistent with the pH range of the dye itself.
• Precautions: The dyeing time should be controlled to avoid uneven color caused by too long or too short time. After dyeing, a fixing agent can be appropriately used to enhance the color fastness.‍

General safety precautions

During the storage and use process, Solvent Blue 70 should be placed in a ventilated and dry place to prevent moisture (its maximum moisture content should not exceed 2.0%) . It should be kept away from open flames and high temperatures to avoid potential safety hazards. When operating, appropriate protective equipment such as gloves should be worn to prevent direct contact with the skin .

Technical Specifications

• CAS NO: 12237-24-0

• CI.NO: Solvent Blue 70

• Chemical Family: Phthalocyanine series
• Shade: Yellowish Blue powder

Package

20 or 25kg/compound bag, carton box, iron drum, fiber durm for powder dye and 1000kg/tank for liquid dye.