Squaric acid Bulk Supply for Industrial Use
China Factory Direct
 |
|
| CAS number | 2892-51-5 |
| Product name | Squaric acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeElectronic 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) |
QUOTE TYPE
PACKAGING TYPE
TOTAL QUANTITY(KG)
PREFERRED SHIPPING METHOD
YOUR COMPANY
YOUR E-MAIL
Calculate Summary
Based on current marketvolatility and material availability.
Documents We Provide for Squaric acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Squaric acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Squaric acid
| Industry | Application | Process |
|---|---|---|
| Pharmaceuticals | Synthesis of antiviral drug intermediates | Condensation reactions involving squaric acid derivatives |
| Pharmaceuticals | Preparation of anticancer drug precursors | Cyclization reactions using squaric acid |
| Dyes | Production of reactive dyes | Squaric acid serves as a coupling component in dye synthesis |
| Pesticides | Synthesis of herbicide intermediates | Esterification or acylation reactions involving squaric acid |
| Materials Science | Preparation of functional polymers | Squaric acid used to construct conjugated structural units |
| Optical Materials | Synthesis of nonlinear optical materials | Molecular design leveraging squaric acid’s electron-transfer properties |
Manufacturing Quality Control of Squaric acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | Acid-Base Titration | Titration of squaric acid solution with standardized sodium hydroxide solution using phenolphthalein as indicator. The content of squaric acid is calculated based on the volume of alkali consumed. Suitable for quantitative analysis of high-purity samples. |
| High-Performance Liquid Chromatography (HPLC) | Uses a C18 column and UV detector (at low wavelength, e.g., 210 nm), with an acidic mobile phase (e.g., phosphate buffer) to separate and quantify squaric acid. Offers high sensitivity and good selectivity. | |
| Moisture Content | Karl Fischer Titration | Based on the reaction of iodine and sulfur dioxide with water in an anhydrous environment, this method accurately determines moisture content in samples, suitable for trace moisture detection. |
| Residue on Ignition / Sulfated Ash | Gravimetric Method | The sample is ignited at high temperature and the residue is weighed to assess inorganic impurity content. Commonly used for quality control of active pharmaceutical ingredients or industrial-grade products. |
| Chlorides | Silver Nitrate Turbidimetry | In a nitric acid medium, silver nitrate is added to form turbidity from silver chloride precipitate; chloride impurity levels are determined by turbidity measurement. |
| Sulfates | Turbidimetric Method | In a hydrochloric acid medium, barium chloride is added to generate barium sulfate precipitate; sulfate impurity content is determined by measuring turbidity. |
| Heavy Metals | Thioacetamide Method (Chinese Pharmacopoeia Method) | In weakly acidic conditions, heavy metal ions react with thioacetamide to form colored sulfides, and total heavy metal content is determined colorimetrically. |
| Iron Content | Thiocyanate Colorimetric Method | Iron ions react with potassium thiocyanate under acidic conditions to form a red complex, and iron impurity content is measured by spectrophotometry. |
| Arsenic Content | Gutzeit Method | In acidic conditions, arsine gas reacts with mercuric bromide test paper to produce yellow to brown spots, used for limit testing of arsenic impurities. |
| pH Value | pH Meter Measurement | Dissolve squaric acid into an aqueous solution (e.g., 1%) and directly measure its acidity using a calibrated pH meter. |
| Crystal Form and Purity | Differential Scanning Calorimetry (DSC) or X-Ray Diffraction (XRD) | DSC analyzes melting behavior and crystallinity; XRD identifies crystal structure to determine the presence of polymorphs or impurity phases. |
| Volatile Organic Impurities | Gas Chromatography (GC) | Suitable for detecting residual solvents or other volatile organic impurities. Derivatization (e.g., esterification) may be required to enhance detection sensitivity. |
Technical Specifications of Squaric acid
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (HPLC) |
| Water Content (KF) | <=0.5% |
| Melting Point | 210-215°C (decomposes) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
|
|
Download COA of Squaric acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Squaric acid
Packaging of Squaric acid
Industrial Squaric acid 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.
Use Bulk
Supply Factory
Direct ISO 9001
Certified Samples
Available Stable
Supply