Toluidine Blue O Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 92-31-9 |
| Product name | Toluidine Blue O |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeCosmetic GradeFood Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Toluidine Blue O
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Toluidine Blue O Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Toluidine Blue O
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Dyeing and printing of cotton, linen, silk, wool, and blended fibers | Direct dyeing, mordant dyeing, preparation of printing pastes |
| Paper Industry | Coloration and tone adjustment of paper | Added to pulp prior to sizing or during papermaking |
| Ink Manufacturing | Blue colorant for aqueous inks and banknote inks | Mixed with binders (e.g., acrylic resins, polyvinyl alcohol) and ground to achieve dispersion |
| Cosmetics | Colorant in temporary hair dyes, tattoo gels, and color cosmetics (restricted to non-ocular, non-mucosal applications) | Incorporated into emulsion systems at concentrations compliant with the Limits specified in the Technical Specifications for Cosmetic Safety (≤0.5%) |
| Biological Staining | Counterstain in tissue section staining and Gram staining of bacteria | Applied as a dilute alkaline solution of Brilliant Blue 17 following primary staining with crystal violet and mordanting with iodine solution |
Manufacturing Quality Control of Toluidine Blue O
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | UV-Vis Spectrophotometry | Measures absorbance at lambda-max (~605 nm) and calculates concentration using Beer-Lambert law and certified reference standard. |
| Moisture Content | Karl Fischer Titration | Quantifies water via coulometric or volumetric titration with iodine-based reagent reacting stoichiometrically with water. |
| Ash Content | Gravimetric Analysis (Ignition at 550 C) | Determines inorganic residue after high-temperature combustion and subsequent weighing of the residual ash. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Measures absorption of characteristic radiation by ground-state metal atoms in flame or graphite furnace. |
| Chloride Content | Potentiometric Titration with AgNO3 | Detects endpoint via silver chloride precipitation and potential change measured with silver indicator electrode. |
| pH of 1% Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity in standardized aqueous suspension using calibrated glass electrode system. |
| Solubility in Water | Visual Inspection & Filtration | Evaluates complete dissolution of specified amount in distilled water at 25 C with absence of undissolved particles after filtration. |
| Organic Impurities (Related Substances) | HPLC with UV Detection | Separates components on reversed-phase column and quantifies impurities by peak area relative to main peak using UV detection. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 550 C) | Same principle as ash content; measures non-volatile residue after controlled heating and cooling. |
| Iron Content | ICP-OES | Atomizes sample in plasma and measures element-specific emission intensities for quantitative determination. |
| Sulfate Content | Gravimetric Analysis (as BaSO4) | Precipitates sulfate as barium sulfate, filters, dries, and weighs the insoluble precipitate. |
| Bulk Density | Graduated Cylinder Method | Measures mass per unit volume of freely poured powder without compaction using standardized cylinder and balance. |
Technical Specifications of Toluidine Blue O
| Test Item | Specification |
|---|---|
| Appearance | Dark blue crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 235-240°C |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in ethanol and chloroform; slightly soluble in water |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Toluidine Blue O
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Toluidine Blue O
Packaging of Toluidine Blue O
Industrial Toluidine Blue O Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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