PRODUCT DESCRIPTION
Hydroxypropyl Methyl Cellulose (HPMC, Hypromellose) is a non‑ionic cellulose ether refined from natural cotton linter via alkalization, etherification, washing and drying. It is a white or off‑white free‑flowing powder, soluble in cold water to form transparent, stable viscous colloid, insoluble in hot water and most organic solvents.
HPMC combines multiple core functions: water retention, thickening, bonding, anti‑sagging, film formation, dispersion and retarding. It is stable under weak acid and weak alkaline environments, non‑toxic, formaldehyde‑free and meets global export standards. As a core additive, it optimizes workability, stability and final performance in dry mortar, coatings, daily chemicals and many industrial sectors.
| Item | Characteristic |
|---|---|
| Ionic Type | Non‑ionic cellulose ether |
| Solubility | Dissolve in cold water; insoluble in hot water & organic solvent |
| Main Value | Water retention & thickening |
| Feature | Anti‑slip, retard setting, good film‑forming property |
POINTS FOR ATTENTION
ORDER INSTRUCTIONS
Please provide the following information when placing an order for HPMC to ensure accurate production and delivery:
| Item | Details |
|---|---|
| Viscosity Grade | Extra low / Low / Medium / High / Ultra-high / Super ultra-high viscosity |
| Substitution Type | Construction grade / Daily chemical grade / Industrial special grade |
| Surface Treatment | Instant cold-water soluble type or delayed soluble type |
| Particle Size | 80 mesh / 100 mesh / 120 mesh or customized |
| Packaging | Standard 25kg PE-lined kraft bag or pallet packing |
| Quantity & Delivery | Total weight, port of loading, required lead time |
Custom slow-setting, high water-retention formulas are available upon request. MOQ for customized grades is negotiable.
USAGE NOTES
Correct dissolving and adding method will avoid agglomeration and maximize the performance of HPMC:
- Recommended method: Dry-mix HPMC with other powder raw materials evenly before adding water.
- Dissolving: Cold water dissolving; hot water will not dissolve HPMC.
- pH range: Stable between pH 5.0–7.5. Strong acid or strong alkali will reduce viscosity.
- Addition dosage: Dry mortar 0.05%–0.3%; coatings & detergents 0.1%–0.5%.
- Storage: Keep sealed, cool and dry. Avoid moisture absorption, which may cause caking.
- Compatibility: Compatible with most water-soluble thickeners, dispersants and surfactants.
COMMON FORMULAS
Reference proportion for typical formulations (total weight basis):
| Formulation Type | HPMC Dosage | Remarks |
|---|---|---|
| Interior Wall Putty | 0.10% ~ 0.20% | Medium viscosity grade, improve water retention |
| Tile Adhesive C1 | 0.15% ~ 0.25% | High viscosity, anti-sagging |
| Self-leveling Mortar | 0.06% ~ 0.12% | Extra low / low viscosity, good fluidity |
| Water-based Latex Paint | 0.20% ~ 0.40% | Low viscosity, leveling & anti-settling |
| Liquid Detergent | 0.15% ~ 0.30% | Daily chemical grade, gentle thickening |
| Pesticide Suspension Agent | 0.20% ~ 0.50% | Stable suspension, reduce drift |
These are reference ratios. Final dosage should be adjusted according to local raw materials and construction climate.
COMMON PROBLEMS IN DOWNSTREAM PRODUCTION
| Problem | Cause Analysis | Solution |
|---|---|---|
| HPMC agglomerates & cannot dissolve | Direct pouring into water without dry mixing | Dry mix with powder first; use instant soluble grade |
| Mortar loses water quickly, cracks easily | Viscosity too low or insufficient dosage | Raise viscosity grade or increase addition amount |
| Mortar sags on vertical surface | Viscosity insufficient, poor anti-sag property | Switch to high / ultra-high viscosity HPMC |
| Paint viscosity drops after storage | Microbial degradation, improper pH | Add biocide; control pH within 5–7.5 |
| Putty setting time too long | Overdose of retarding type HPMC | Reduce dosage or select standard type |
| Liquid product has poor transparency | Poor purity, incomplete dispersion | Switch to daily chemical grade, extend stirring time |
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FAQ
PRICE INFORMATION
- Quotation Basis: CMC price depends on product grade, viscosity, substitution degree, order quantity and delivery terms.
- Price Validity: All quotations are subject to market raw material fluctuation. Normally valid for 7 days unless otherwise specified.
- Price Contains: The quoted price covers product cost and standard export packaging. Freight, insurance and export charges are calculated separately according to Incoterms.
- Tax & Invoice: Commercial invoice for export will be provided. Relevant export tax formalities can be handled.
- Payment Discount: Better price can be offered for larger repeated orders. Please contact us for the latest formal quotation.
DELIVERY TIME & SHELF LIFE
- Production Lead Time: 7–15 working days after receiving your deposit, subject to factory production schedule.
- Shipping Arrangement: After production completion, we will book container and arrange shipment. Port space availability may affect the departure date.
- Transit Time: Sea transit time varies according to destination port, generally ranges from 15 to 45 days.
- Shelf Life: 24 months from production date when stored under proper dry and cool conditions with original sealed packaging.
- Storage Warning: Once the bag is opened, please consume as soon as possible and keep away from moisture, high temperature and direct sunlight.
PRODUCT QUALITY
- Raw Material Inspection: All raw materials are strictly inspected before entering production line to guarantee stable base quality.
- In-process Monitoring: Continuous online monitoring during production for viscosity, substitution degree and moisture content.
- Batch Test: Every finished batch will be sampled and tested before delivery. Qualified report will be provided together with shipment documents.
- Consistency Control: Automated production lines reduce batch difference, ensuring stable performance for repeated orders.
- Quality Support: We accept third-party inspection before shipment. Technical team offers after-sales technical support for quality related issues.
ABOUT US
- Headquartered in Shijiazhuang: Based in Shijiazhuang, Hebei, a globally influential fine chemical production hub with huge capacity and full industrial chain to ensure stable raw materials and bulk supply.
- Geographic Advantage: Convenient inland transport near Tianjin and Qingdao ports, supporting fast container shipment and competitive export logistics cost.
- Full-chain Supplier: One-stop provider of fine chemical additives and matching production equipment, custom service available beyond cellulose ethers.
- Technical Team: Professional team supplies formula consultation, sample testing and product selection for various industrial projects.
- Global Export: Years of export experience, providing reliable goods, full export documents and timely after-sales technical support.
相关产品及设备
USEFUL LINKS
- AIChE https://www.aiche.org/
- IChemE https://www.icheme.org/
- Cheresources https://www.cheresources.com/
- NIST Chemistry WebBook https://webbook.nist.gov/chemistry/
- AspenTech https://www.aspentech.com/
- DECHEMA https://www.dechema.de/en.html
- ChemEngPlanet https://www.chemengplanet.com/
- PubChem https://pubchem.ncbi.nlm.nih.gov/
- Chemical Processing https://www.chemicalprocessing.com/
- ChemIndustry https://www.chemindustry.com/
- PharmaChemEngineer https://www.pharmachemeng.com/
- GlobalSpec https://www.globalspec.com/