Discover our core high-performance colorants and industrial additives engineered for structural integrity, dye fastness, and rigorous ecological compliance.
Tianjin Sunrise Chem Group specializes in manufacturing high-quality dyestuffs. Our extensive product portfolio includes Direct dyes, Acid dyes, Basic dyes, Sulphur dyes, Solvent dyes, Liquid dyes, and Fluorescent dyes, serving a wide variety of industrial requirements.
Backed by decades of industry and export experience, we have built a reputation for reliability and excellence, serving clients from diverse sectors including denim, textile, leather, paper, and plastic. We always highly focus on the goods' quality and stability. Each shipment is rigorously tested before sending to the port. Our ZDHC level 3 and GOTS certificates ensure your quality is guaranteed.
Environmental protection is the cornerstone of our innovation. We dedicate ourselves to providing clients with eco-friendly, high-quality colorants that balance productivity with environmental harmony, driving the industry towards a more sustainable development path while delivering high-performance products—for a greener textile industry and a sustainable future.
An authoritative analysis of chemical properties, synthesis standards, and custom formulations required for high-precision industrial applications.
Basic Blue 9, scientifically classified as Methylene Blue (C.I. 52015), is a cationic thiazine dyestuff. In its pure form, it presents as a dark green crystalline powder with a bronze luster, dissolving readily in water to yield a brilliant, high-extinction blue solution. Our factories utilize advanced recrystallization processes to control impurities and maintain chemical consistency across every manufacturing run.
For demanding procurement requirements, understanding the distinction between standard zinc double salt formulations and pure pharmaceutical-grade or zinc-free versions is critical. Tianjin Sunrise Chem Group offers customized variations to meet specific biological, agricultural, and industrial wastewater treatment regulations.
| Parameter Description | Industrial Standard Grade | High-Purity / Refined Grade | Testing Methodology |
|---|---|---|---|
| CAS Number | 61-73-4 (Anhydrous) / 7220-79-3 (Trihydrate) | Spectroscopy Reference | |
| Active Dye Content (Purity) | ≥ 85% | ≥ 98% - 99% (Zinc-Free) | UV-Vis Spectrophotometry |
| Appearance | Dark Green Lustrous Crystalline Powder | Visual Examination | |
| Moisture Content | ≤ 10.0% | ≤ 5.0% - 8.0% | Karl Fischer Titration |
| Insoluble Matter (Water) | ≤ 0.5% | ≤ 0.1% | Gravimetric Analysis |
| Heavy Metals (Pb, Cd, As) | < 50 ppm total | < 10 ppm total (Compliance Grade) | ICP-MS Analysis |
| Absorption Maximum (λ max) | 663 - 667 nm (in water) | Spectrophotometer Calibration | |
Cooperating with textile and paper mills for many years shows that our factory has established a strong and reliable business relationship. This kind of long-term collaboration brings numerous benefits, such as consistent order fulfillment, shared resources, and mutual technical support. It also indicates that the factory has a good track record of delivering quality products and meeting the needs of global partners.
How our Basic Blue 9 formulations behave under localized processing conditions across various global manufacturing sectors.
In global textile manufacturing, Basic Blue 9 is highly valued for its affinity to acrylic fibers, modacrylics, and tannin-mordanted cotton. It produces intensely vibrant shades with excellent leveling properties. Our zinc-free variants prevent fiber degradation and comply with global apparel manufacturing brands.
For paper mills requiring deep blue and cyan shading, Basic Blue 9 delivers fast exhaustion rates onto unbleached Kraft pulps. Our liquid dye formulations are optimized for continuous automated metering systems, reducing dusting issues in modern mills and providing high tinting strength.
In scientific laboratories and aquaculture sectors, our high-purity refined Methylene Blue serves as an essential staining agent for microscopy, bacteria identification, and as a safe redox indicator. Strict heavy-metal limits are maintained during refining to prevent toxicity.
With years of export experience, we have successfully established strong partnerships in many countries. Our dedication to meeting global demands is backed by robust shipping procedures.
The Global Organic Textile Standard (GOTS) and the Zero Discharge of Hazardous Chemicals (ZDHC) program represent the gold standards of modern chemical manufacturing. By achieving ZDHC Level 3—the highest compliance tier—we guarantee that our dye formulations contain no banned chemical substances or harmful byproducts.
Our commitment involves rigorous testing of wastewater, chemical input screening, and worker health safety measures, enabling global fashion brands and packaging converters to meet their ESG goals with confidence.
Explore our industrial application options for wool, leather, cotton, silk, and plastic polymers, designed for maximum color intensity and durability.
At Sunrise Chem Group, every single batch of Basic Blue 9 undergoes a multistepped QA assay sequence prior to packing. This strict regime guarantees that factors such as dilution solubility, shade undertone, moisture, and salt concentrations meet our clients' targets.
We pride ourselves on offering customized solutions. Our team of experts works closely with clients to understand their unique needs and delivers tailored products and services. We actively seek strategic partnerships to expand our reach and enhance our offerings. Collaborate with us to explore mutual growth opportunities.
By keeping strict control charts, we prevent the variation in quality often seen in standard merchant supplies. This is why major textile and paper packaging mills keep choosing us for long-term supply contracts.
The dye manufacturing industry is undergoing a significant transition toward safety, resource efficiency, and carbon reduction. Several key trends are shaping the future of Methylene Blue and Basic Blue 9 applications:
Get authoritative technical answers to common queries regarding quality testing, compliance certifications, and global factory distribution.
We supply Basic Blue 9 in different grades to suit your needs: a standard industrial grade with an active dye content of 80%-85% for paper and textile applications, and a highly purified, zinc-free refined grade reaching up to 98% purity for specialized chemical assays and aquaculture applications.
ZDHC Level 3 is the highest level of certification. It confirms that our formulations have been independently reviewed and do not contain restricted substances or hazardous chemical inputs. This allows you to export your finished products to tightly regulated markets like the European Union and the USA without compliance risks.
Yes. Our engineering team can formulate liquid variations of our dyestuffs, including Direct, Acid, and Basic dyes. These are tailored to the viscosity, pH range, and concentration levels required by your mill's automatic dosing systems, helping to prevent dust contamination in the workspace.
Basic Blue 9 is highly stable under dry conditions. It should be stored in original sealed drums in a dry, well-ventilated warehouse away from direct sunlight, moisture, and strong oxidizing agents. Proper storage prevents agglomeration and moisture absorption, keeping the dye easy to dissolve and stable in shade strength.
With our production facility strategically located near Tianjin Port, we can transport goods to the docks within 48 hours of quality inspection release. Typical shipment lead times are 7-15 days for standard catalog orders, and slightly longer for custom formulations or bulk contract orders.
We maintain high quality control standards across all our product classes, including Solvent dyes, Direct dyes, Acid dyes, and Inorganic pigments.
Sunrise
