LITMUS Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 1393-92-6 |
| Product name | LITMUS |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 LITMUS
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk LITMUS Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of LITMUS
| Industry | Application | Process |
|---|---|---|
| Education | pH indicator in acid-base titration experiments | Dissolve litmus in distilled water or an ethanol-water mixture to prepare a 0.1–1% solution; add directly to the test solution and determine the pH range (pH 4.5–8.3) based on color change (red → purple → blue) |
| Chemical Analysis | Qualitative assessment of solution acidity/alkalinity and approximate pH range | Prepare litmus test paper (red and blue variants) by impregnating filter paper; perform rapid identification via color development upon contact with the sample solution |
| Pharmaceutical Quality Control | Acidity/alkalinity screening of active pharmaceutical ingredients (APIs) and formulation intermediates | Used as a simple, low-cost initial pH screening tool during process validation or intermediate release testing, supporting subsequent precise pH measurement |
Manufacturing Quality Control of LITMUS
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (C7H7O4N content) | UV-Vis Spectrophotometry | Measures absorbance at characteristic wavelength (approx. 565 nm in alkaline medium) and calculates concentration via Beer-Lambert law using reference standard. |
| Loss on Drying | Gravimetric (Thermogravimetry) | Determines volatile matter by measuring mass loss after drying at 105 C for 2 hours under controlled conditions. |
| Residue on Ignition | Gravimetric (Sulfated Ash) | Quantifies inorganic impurities by ignition of residue after sulfuric acid treatment at 700-800 C to constant weight. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace heavy metals after acid digestion by measuring element-specific emission intensities. |
| Chloride Impurity | Potentiometric Titration with AgNO3 | Detects chloride ions via argentometric titration using silver nitrate and a silver indicator electrode. |
| Sulfate Impurity | Gravimetric (Barium Sulfate Precipitation) | Precipitates sulfate as BaSO4 and determines mass after filtration, washing, and drying at 500 C. |
| pH of 0.1% Aqueous Solution | pH Potentiometry | Measures hydrogen ion activity using calibrated pH meter with glass electrode in standardized aqueous suspension. |
| Solubility in Water | Visual Inspection/Filter Test | Evaluates complete dissolution of specified amount in distilled water at 25 C with no visible particulates or haze. |
| Color (Appearance) | Visual Comparison against Standard | Assesses physical appearance and hue by comparing dry powder against established color reference standards under controlled lighting. |
| Iron (Fe) Impurity | AAS (Flame Atomic Absorption Spectroscopy) | Quantifies iron after acid digestion by measuring absorption of Fe-specific wavelength (248.3 nm) in atomized sample. |
| Organic Volatile Impurities | GC-FID | Separates and detects residual solvents using gas chromatography with flame ionization detection. |
| Microbial Contamination | Membrane Filtration and Plate Count | Determines total aerobic microbial count by filtering sample solution, culturing on nutrient agar, and enumerating colony-forming units. |
Technical Specifications of LITMUS
| Test Item | Specification |
|---|---|
| Appearance | Purple to blue crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Freely soluble in water and ethanol (1:10 w/v) |
| Color (APHA/Pt-Co) | <=100 |
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 LITMUS
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of LITMUS
Industrial LITMUS 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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