638-25-5 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 638-25-5 |
| Product name | 638-25-5 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Food 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) |
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Documents We Provide for 638-25-5
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 638-25-5 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 638-25-5
| Industry | Application | Process |
|---|---|---|
| Fragrance Industry | Used in food and personal care fragrances | Synthesized via esterification; formulated into fruit-flavored fragrance blends |
| Food Industry | Food additive (flavor enhancer) | Added to confectionery, beverages, and other food products to impart fruit flavors |
| Cosmetics Industry | Fragrance ingredient in perfumes, lotions, and similar products | Employed as a solvent or fixative in compounded fragrance systems |
Manufacturing Quality Control of 638-25-5
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantifies辛酸戊酯 peak area against a calibration curve using an internal or external standard. |
| Acid Value | Acid-Base Titration with NaOH | Measures free fatty acids by titration with standardized sodium hydroxide solution using phenolphthalein indicator. |
| Ester Value | Saponification Titration followed by back-titration | Determines total ester content by alkaline hydrolysis and titration of excess alkali with standardized acid. |
| Water Content | Karl Fischer Coulometric Titration | Electrochemically quantifies water based on iodine generation proportional to water in the sample. |
| Refractive Index | Refractometry at 20 degrees C | Measures bending of light through liquid sample to assess purity and consistency of molecular composition. |
| Specific Gravity | Digital Density Meter or Pycnometer | Compares mass per unit volume of sample to water at specified temperature to verify batch consistency. |
| Color (APHA) | Visual Comparison or Spectrophotometric Measurement | Evaluates yellowness intensity by matching sample color to APHA platinum-cobalt standards. |
| Residue on Evaporation | Gravimetric Analysis | Weighs non-volatile residue after controlled evaporation under nitrogen and drying at 105 degrees C. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantifies trace metal impurities by measuring absorption of element-specific light wavelengths in atomized sample. |
| Peroxide Value | Iodometric Titration | Measures hydroperoxides by their reaction with potassium iodide to liberate iodine, titrated with sodium thiosulfate. |
| Non-Volatile Matter | Gravimetric Analysis | Determines insoluble particulates by filtration, drying, and weighing of retained residue. |
| Odor | Sensory Evaluation by Trained Panel | Assesses conformity to characteristic odor profile using standardized organoleptic testing protocol. |
Technical Specifications of 638-25-5
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow liquid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Refractive Index (n20/D) | 1.416–1.420 |
| Relative Density (20°C/25°C) | 0.855–0.865 g/cm³ |
| Acid Value (mg KOH/g) | <=0.5 |
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 638-25-5
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 638-25-5
Packaging of 638-25-5
Industrial 638-25-5 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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