China Factory Direct
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| CAS number | 123-41-1 |
| Product name | Choline hydroxide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical GradeFood GradeCosmetic Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| 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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Food Industry | Nutritional fortificant | Directly added to food products |
| Animal Feed | Additive | Blended into feed formulations |
| Pharmaceutical Industry | Active pharmaceutical ingredient (API) precursor | Used in synthetic reactions for drug manufacturing |
| Cosmetics Industry | Formulation component | Incorporated into cosmetic formulations |
| Agriculture | Plant growth promoter | Applied via foliar spray or soil incorporation |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Choline Content) | Acid-Base Titration | Quantifies choline hydroxide or choline chloride by titration with standardized acid or base using potentiometric or indicator endpoint detection. |
| Water Content | Karl Fischer Titration | Measures water via stoichiometric reaction between water, iodine, sulfur dioxide, and a base in anhydrous methanol medium. |
| pH (1% aqueous solution) | pH Potentiometry | Determines hydrogen ion activity using calibrated pH electrode in a standardized aqueous solution. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies total heavy metals after wet digestion by measuring absorbance of ground-state atoms at characteristic wavelengths. |
| Sulfate (SO4) | Gravimetric Analysis | Precipitates sulfate as barium sulfate and determines content from dried precipitate mass. |
| Chloride (Cl) | Argentometric Titration | Titrates chloride ions with standardized silver nitrate solution using potassium chromate or potentiometric endpoint detection. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic impurities by weighing residue remaining after high-temperature ashing. |
| Appearance | Visual Inspection | Assesses physical state, color, and clarity against standard reference under controlled lighting and viewing conditions. |
| Specific Optical Rotation | Polarimetry | Measures rotation of plane-polarized light caused by chiral choline molecules in solution at specified concentration and path length. |
| Related Substances | High Performance Liquid Chromatography (HPLC) | Separates and quantifies choline and structurally related impurities using reversed-phase column and UV detection. |
| Microbial Contamination | Plate Count Method | Estimates viable aerobic microorganisms by colony formation on nutrient agar after incubation under controlled conditions. |
| Iron (Fe) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Quantifies iron after acid digestion by measuring element-specific atomic emission intensities in high-temperature plasma. |
| Test Item | Specification |
|---|---|
| Appearance | Colorless liquid |
| Purity | >=98.0% |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Odor | Characteristic mild fishy odor |
| Solubility | Miscible with water and ethanol |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.