20548-54-3 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 20548-54-3 |
| Product name | 20548-54-3 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial Grade |
| Packaging | 25KG/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 20548-54-3
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 20548-54-3 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 20548-54-3
| Industry | Application | Process |
|---|---|---|
| Luminescent Materials | Manufacturing phosphors (e.g., luminous coatings, fluorescent pigments) | Codoped with rare-earth elements (e.g., europium, dysprosium) and synthesized into oxysulfide or sulfide phosphors via high-temperature solid-state reaction |
| Chemical Feedstock | Production of other sulfides (e.g., zinc sulfide, copper sulfide) and sodium hydrosulfide | Undergoes metathesis reactions with corresponding metal salts (e.g., ZnSO₄, CuSO₄); or reacts with NaOH to produce NaSH |
| Leather Industry | Component of depilatory agents (used in liming-depilation processes) | Hydrolyzes under alkaline conditions (pH 12–14) to generate hydrosulfide ions (HS⁻), cleaving disulfide bonds in keratin |
| Metallurgical Industry | Depressant in flotation of heavy-metal ores (e.g., lead, copper) | Adjusts pulp pH and sulfide ion concentration to suppress flotation of sulfide minerals (e.g., pyrite) and enhance selectivity for target minerals |
| Environmental Applications | Precipitant for heavy-metal removal from wastewater | Forms insoluble metal sulfide precipitates (e.g., CdS, PbS) with Cd²⁺, Pb²⁺, Cu²⁺, followed by sedimentation/filtration |
Manufacturing Quality Control of 20548-54-3
| Test Item | Common Testing Methods | Method Overview |
|---|---|---|
| Calcium Sulfide Content | Acid-Base Titration | The sample is dissolved in dilute hydrochloric acid, causing CaS to react and generate H₂S gas, which is absorbed by excess NaOH. The remaining NaOH is then back-titrated with a standard acid solution to indirectly calculate the CaS content. |
| Iodometric Method | Under acidic conditions, H₂S released from CaS reacts with a standard iodine solution. The unreacted iodine is titrated with a standard sodium thiosulfate solution, and the sulfur content is calculated and converted to CaS content. | |
| Moisture Content | Dry Weight Loss Method | A specified amount of sample is dried in an oven at 105–110°C until constant weight is achieved; the moisture content is calculated based on the mass loss. |
| Residue on Ignition | Gravimetric Method (High-Temperature Ignition) | The sample is ignited in a high-temperature muffle furnace (typically 800–1000°C) to remove volatile components; the mass of the residual non-volatile material is measured and used to calculate its content. |
| pH Value | pH Meter Method | The calcium sulfide sample is dissolved in CO₂-free water, stirred, and allowed to stand; the pH of the solution is measured using a calibrated pH meter to reflect its alkalinity or hydrolysis degree. |
| Heavy Metal Content | Atomic Absorption Spectroscopy (AAS) | The sample is digested with acid, and then analyzed using an atomic absorption spectrometer to determine the concentrations of heavy metals such as lead, cadmium, and mercury, assessing impurity levels. |
| Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | A higher-sensitivity method for determining multiple trace metal impurities, suitable for quality control of high-purity calcium sulfide. | |
| Particle Size Distribution | Laser Diffraction Particle Size Analysis | The sample is dispersed in a liquid or gas medium, and particle size distribution is determined based on laser scattering principles, used to control physical properties of the product. |
| Impurity Sulfides | Gas Chromatography (GC) or Colorimetric Method | Detection of coexisting sulfides (e.g., polysulfides) through characteristic reactions or chromatographic separation for qualitative and quantitative analysis. |
Technical Specifications of 20548-54-3
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Residue on Ignition | <=1.0% |
| Heavy Metals | <=20 ppm |
| Total Impurities | <=1.5% |
| Solubility | Sparingly soluble in water; decomposes with evolution of H2S |
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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| Lot/Batch Number | *Required fields | |
Packaging of 20548-54-3
Industrial 20548-54-3 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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