China Factory Direct
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| CAS number | 21948-70-9 |
| Product name | 2-(Methylthio)pyrazine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural 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) |
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 | Food Additive | Used in the production of food additives with specific aroma profiles |
| Cosmetics Industry | Fragrance Ingredient | Applied as a fragrance component in cosmetic formulations |
| Pesticide Industry | Pesticide Intermediate | Used in the synthesis of pesticide compounds |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies 2-methylthiopyrazine by separation on a capillary column and flame ionization detection relative to an internal standard. |
| Related Substances | Gas Chromatography-Mass Spectrometry (GC-MS) | Identifies and semi-quantifies impurities based on retention time and characteristic mass fragmentation patterns. |
| Water Content | Karl Fischer Titration (Coulometric mode) | Determines water via electrochemical generation of iodine and stoichiometric reaction with water in anhydrous methanol-based reagent. |
| Residue on Ignition | Gravimetric analysis after high-temperature ashing | Measures non-volatile inorganic residue remaining after incineration at 700-800 C in a muffle furnace. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) with graphite furnace | Quantifies total heavy metals by atomizing the sample in a graphite tube and measuring absorbance at element-specific wavelengths. |
| Chloride Impurity | Ion Chromatography (IC) with conductivity detection | Separates and quantifies chloride ions using anion-exchange column and suppressed conductivity detection. |
| Sulfate Impurity | Ion Chromatography (IC) with conductivity detection | Separates and quantifies sulfate ions using anion-exchange column and suppressed conductivity detection. |
| Acid Value | Acid-base titration with NaOH and phenolphthalein indicator | Measures free acidic impurities by titration with standardized sodium hydroxide solution to a phenolphthalein endpoint. |
| Color (APHA) | Visual comparison or spectrophotometric measurement at 430 nm | Evaluates yellowness intensity by comparing sample absorbance at 430 nm against APHA platinum-cobalt standards. |
| Density at 20 C | Digital density meter (oscillating U-tube principle) | Determines density from the resonant frequency shift of a vibrating U-shaped glass tube filled with sample. |
| Refractive Index at 20 C | Abbe refractometer | Measures refractive index based on critical angle of total internal reflection at the prism-sample interface. |
| Volatility Residue | Thermogravimetric Analysis (TGA) | Quantifies non-volatile residue by monitoring mass loss under controlled nitrogen purge up to 150 C. |
| Test Item | Specification |
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| Appearance | Pale-yellow solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Melting Point | 42–46°C |
| Identification (NMR) | Conforms to reference standard |
| Odor | Characteristic pyrazine-like odor |
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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.