High-Purity Paraformaldehyde (CAS 25231-38-3) Supplier | Electronic Chemicals Grade | SD Look Chemical
Paraformaldehyde CAS 25231-38-3 | Electronic Chemicals
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Payment: L/C,T/T,D/P,Paypal,Money Gram,Western Union
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Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
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Min: 10 Gram
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Delivery: 7 Days
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Transporta: Ocean, Land,Air, DHL，TNT
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Port: Shanghai Port, Qingdao Port
Name: Paraformaldehyde
CAS: 25231-38-3
Purity: 99%min
MOQ: 1KG
Chemical Structure
Basic Info:
| CAS No: | 25231-38-3 |
| Name: | Paraformaldehyde |
| EINECS: | 607-656-2 |
| Formula: | C3H6O3X2 |
| Weight: | 90.08 |
| Other Names: | Polyacetal |
| Type: | Electronic Chemicals |
| Shelf Life: | 1 years |
| Brand Name: | Look Chem |
| Place of Origin: | Shandong, China |
Basic Introduction to Paraformaldehyde
Paraformaldehyde (also designated as Poly(oxymethylene), CAS No. 25231-38-3) is a white, free-flowing solid polymer of formaldehyde featuring a characteristic pungent odor. Represented by the structural formula C3H6O3X2, it serves as a concentrated, low-water solid formaldehyde source for industrial organic synthesis, resin polymerization, and chemical processing.
Engineered under tightly controlled polymerization and drying conditions by Shandong Look Chemical Co., Ltd., our refined Paraformaldehyde (CAS 25231-38-3) grades cater to stringent industrial requirements. In the sector of electronic chemicals, where residual inorganic ions and insoluble particulate matter compromise microelectronic yield, our low-ash, high-solubility Paraformaldehyde serves as a critical raw material. It is widely applied in the synthesis of high-performance electronic-grade phenolic resins, novolac resins for photolithography resist formulations, specialized electronics encapsulants, and fine chemical intermediates.
Nature and Specifications:
Specification
Specification
| Item | Specification |
| Product Name | Paraformaldehyde |
| CAS No. | 25231-38-3 |
| Appearance | White Granular |
| Shelf Life | 2 years |
| Packing | 1kg/bag,25kg/bag or as your requirements |
Product Packaging
Paraformaldehyde Application
The high active formaldehyde content and minimal water load of Paraformaldehyde (CAS 25231-38-3) make it an indispensable reagent across specialized manufacturing sectors:
A. Electronic Chemicals & Semiconductor Resins
In the manufacturing of modern electronic chemicals, Paraformaldehyde acts as a high-purity methylene crosslinking donor.
Photolithography & Novolac Resins: Used as a primary aldehyde reactant to produce high-purity novolac resins and photoresist matrix polymers required in semiconductor wafer processing.
Electronics Encapsulation: Reacts in low-water environments to synthesize specialty epoxy-curing phenolic hardeners utilized in printed circuit board (PCB) laminates and integrated circuit encapsulants.
B. Specialty Resins & Coating Binder Synthesis
Modified Amino & Phenolic Resins: Provides high reaction control in producing etherified melamine-formaldehyde and urea-formaldehyde resins for industrial baking enamels and automotive coatings.
Alkyd & Synthetic Rubber Additives: Acts as a modifier to improve thermal stability and chemical resistance in synthetic rubber compounding.
C. Agrochemical & Pharmaceutical Intermediates
Heterocyclic & Active Ingredient Synthesis: Serves as a key condensation building block in synthesizing crop protection active ingredients (such as herbicides and fungicides) and active pharmaceutical ingredients (APIs).
Certifications & Regulatory Compliance
To verify international safety compliance and ensure uninterrupted global supply chains across European, American, and Asian markets, our manufacturing and logistics operations adhere strictly to international management standards:
ISO 9001:2015 Quality Management System: Standardized production protocols ensuring batch-to-batch consistency in polymer chain length, reactivity, and purity.
ISO 14001:2015 Environmental Management System: Eco-compliant drying and exhaust treatment systems designed to minimize volatile organic compound (VOC) emissions.
GHS & SDS Compliance: Safety Data Sheets (16 structured sections) prepared in multiple languages, conforming strictly to UN GHS hazard classification for Class 4.1 flammable solids (UN 2213).
REACH Compliance: Supported by technical dossiers enabling compliant importation and distribution across the European Union.
Dangerous Goods (DG) Transportation Certification: UN-approved moisture-proof packaging and sea-freight containers inspected for hazardous flammable solid handling.
At SD Look Chemical, every batch of Paraformaldehyde (CAS 25231-38-3) undergoes rigorous analytical testing in our Jinan testing facility prior to packaging and release.
Typical Certificate of Analysis (COA) Specifications:
CAS Registry No.: 25231-38-3 (Verified)
Appearance: White free-flowing prills / powder (Conforms)
Formaldehyde Assay (Titration): 91.0 % – 96.0 % (Typical result: 95.8 %)
Ash Content (Residue on Ignition): ≤ 0.02 % (Typical result: 0.008 %)
Acidity (as Formic Acid): ≤ 0.03 % (Typical result: 0.015 %)
Iron Content (Fe): ≤ 2 ppm (Typical result: 0.6 ppm)
Water-Insoluble Matter: ≤ 0.05 % (Typical result: 0.012 %)
Melting Point Range: 120°C – 170°C (Conforms)
Sodium Sulfite Titration: Quantitative assay testing determines total effective formaldehyde concentration to maintain accurate stoichiometry in downstream reactions.
Gravimetric Ash Determination: Critical for applications in electronic chemicals, samples undergo high-temperature muffle furnace ignition to verify that total inorganic residue remains well below 100 ppm.
Atomic Absorption Spectrophotometry (AAS): Trace metal analysis ensures ultra-low levels of transition metals (iron, copper, zinc) that could interfere with semiconductor-grade resin polymerization.
Dissolution Rate & Insoluble Testing: Heated aqueous and organic solvent dissolution tests ensure complete depolymerization without leaving unreacted polymer residues.
FAQ
A: We supply both free-flowing Prills (91% and 96% assay) and Fine Powder (96% assay). For high-end applications in electronic chemicals and microelectronics, we offer Low-Ash / Low-Iron Refined Grades with customized limits on ash content (≤0.01%), iron (≤1 ppm), and water-insoluble matter.
A: Paraformaldehyde is sensitive to moisture and ambient heat. We pack the material in UN-approved 25kg multi-wall paper-plastic composite bags lined with dual-layer PE inner liners, or 500kg/1000kg conductive jumbo bags. Pallets are shrink-wrapped with moisture barriers, and we recommend shipping in climate-managed containers away from direct heat sources.
A: Yes. We provide evaluation samples (typically 500g to 1kg) for industrial R&D laboratories to conduct depolymerization trials and purity screening. Each sample shipment is accompanied by a batch-specific COA specifying CAS 25231-38-3, SDS, and Technical Data Sheet (TDS).
A: Standard packaging includes 25kg bags and 500kg/1000kg bulk bags. Because Paraformaldehyde is classified as a Class 4.1 Dangerous Good (UN 2213), we maintain regular UN packaging inventory and process complete export customs and dangerous goods safety declarations, delivering dispatch within 7–10 business days following order confirmation.
Related References:
Pubchem–Paraformaldehyde
Paraformaldehyde Manufacturer & Supplier
As an experienced producer and supplier of Paraformaldehyde, Look Chemical is committed to producing and selling high-quality products.
We cooperate and trade with over 6000 factories worldwide, and our high-quality products and services have earned us a high reputation internationally.
As a supplier of Paraformaldehyde, Look Chemical provides supply chain solutions to partners and customers in various industries. We offer highly competitive prices and high-quality products.
If you have a demand for this product, please contact our sales staff and we will provide you with a solution as soon as possible.
Achievements📝
I’m william, CEO of Look Chemical Co, Ltd. Welcome to visit our company. As China’s top Global Supply Specialist of chemicals, we have always been adhering to the principle of “service first, quality first, mutual benefit”, and we insist on Create value for customers and grow together with customers.
In the past few years , we have provided efficient and satisfactory services to more than 6000 customers and have been widely praised internationally. In the future, we will strive to provide more than 100,000 customers with professional and thoughtful services, and strive to become your first choice for worry-free purchasing chemicals in China , Hope to bring you a good cooperation experience. If you have any questions, please feel free to contact us.
Pre-Sales Service👍
* Timely reply and 24 hours online, the professional team will provide you with the most favorable prices and high-quality products.
* The sample supports testing and inspection.
* Each batch of products will be tested to ensure that its quality meets user needs.
*Packaging can also be made according to customer requirements.
*Any inquiries will be answered by our relevant personnel within 24 hours.
*We will provide you with commercial invoice, packing list, packing list, COA, health certificate and certificate of origin if you need it. If your market has other special requirements, please let us know.
After-Sales Service🔔
*We will monitor the logistics information in real time and will share the information with you.
* You can consult us at any time if you have any questions about the product, and we will answer you in time.
*If you have any questions about the product, you can report it to us, we will deal with it in time for you, and the product can be returned.
Advice on Shipping✈️
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
Look chemical company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.
And a range of 30,000 products with the best quality and competitive price to meet your different purchasing needs.
Product Data:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Analysis (MOA)
- Nuclear Magnetic Resonance (NMR)
- Packing pictures and loading video before loading
- Free Sample
- Factory audit
Cooperation Partner
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