HPMC Hydroxypropyl Methyl Cellulose Powder for Cement Mortar and Construction Admixtures
Buyer-facing sourcing candidate for industrial-grade HPMC powder used in cement-based construction formulations. Key RFQ checks should confirm CAS 9004-65-3, viscosity grade, methoxy and hydroxypropyl substitution range, moisture, pH, gelation temperature, particle size, ash or residue, batch COA, SDS, packing format, and export documentation availability before purchase.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS No.: 9004-65-3; confirm on COA and SDSCellulose ether / construction chemical auxiliaryCandidate - verify grade, COA/SDS, HS code, and export classification before RFQ award
Hydroxypropyl content: request value and test method; not clearly shown in source text
pH: source lists 4.0-8.0; confirm test concentration
Moisture: source lists ≤5%
Gelation temperature: source lists 60-90°C
Application focus: wall putty, tile adhesive, cement mortar, plaster, and dry-mix construction admixtures
Request impurity profile: ash/residue, chloride/salt content if relevant, heavy metals if required by destination market, insoluble matter, and microbial limits if applicable
Who uses this page
Target buyers
Dry-mix mortar manufacturers
Tile adhesive and grout producers
Wall putty and skim coat manufacturers
Cement render and plaster producers
Construction chemical distributors
Building materials formulators
Importers sourcing cellulose ethers from China
Private-label construction additive brands
Before matching
Documents to check
CAS number, grade, assay, and impurity profile
SDS, COA, TDS, HS code, and transport classification
Destination-market import documents before supplier matching
Package and route
Packing notes
Source lists 25 kg per PP woven bag; confirm inner PE liner and moisture barrier requirements
Source also mentions 25 kg/bag, 50 kg/bag, or customized packaging
Confirm palletization, stretch wrapping, container loading quantity, and whether fumigation-free pallets are available
Confirm batch number, net weight, production date, shelf-life statement, and label language on each bag
Ask whether sample packs are available and whether sample COA matches commercial batch format
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
Water-retention additive in cement-based dry-mix products
Thickening and consistency control in wall putty and skim coat formulations
Workability modifier for tile adhesive and mortar systems
Binder and film-forming auxiliary in construction coating or putty applications
Industrial formulation input where a defined HPMC viscosity grade is required
How we compare
Sourcing options
Request quotation by viscosity grade and substitution type rather than generic HPMC only
Compare at least three grades using the same viscosity test method before approving supply
Start with sample and pilot-lot validation before container-scale procurement
Use pre-shipment COA verification and optional third-party inspection for first orders
Request moisture-protected packaging for long ocean transit or humid destinations
Ask for FOB China port and CIF destination quotes to compare freight and insurance assumptions
Human review
Compliance notes
Request current SDS in destination-market language before shipment
Request COA for each batch showing CAS, grade, viscosity method, moisture, pH, methoxy/hydroxypropyl values, and key impurities
Confirm whether the product is classified as dangerous goods for the selected transport mode; HPMC is commonly shipped as non-DG, but classification must be verified from SDS and carrier review
Verify export HS code with supplier and customs broker; source lists HS Code 29072300, which may not align with HPMC and should be checked before customs filing
Confirm REACH, inventory status, or local chemical notification needs for the importing country; do not rely on marketplace listing claims
If used in building products with local standards, request third-party test reports only for the specific grade being purchased
Confirm ISO certificates, business license, and third-party inspection options such as SGS or BV if required by buyer policy
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
HPMC CAS 9004-65-3hydroxypropyl methyl cellulose powderconstruction grade HPMCcellulose ether for mortarHPMC for tile adhesiveHPMC for wall puttycement mortar additivedry mix mortar HPMCChina HPMC manufacturerindustrial grade cellulose ether
Related product options
Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
Can you confirm the exact HPMC grade name and CAS 9004-65-3 on the COA and SDS?
What viscosity grades are available, and what is the viscosity test method, solution concentration, temperature, and spindle/standard used?
What are the methoxy and hydroxypropyl substitution ranges for the offered grade?
Can you provide recent batch COA, SDS, TDS, and a representative sample from the same production line?
What are the typical values and limits for moisture, pH, ash/residue, particle size, and insoluble matter?
Is the product intended for dry-mix mortar, tile adhesive, wall putty, gypsum plaster, cement render, or another construction formulation?
What packing options are available: 25 kg bag, 50 kg bag, jumbo bag, palletized cargo, or private label bags?
What is the MOQ for trial order and regular container order?
Checks before quote
Request current SDS in destination-market language before shipment
Request COA for each batch showing CAS, grade, viscosity method, moisture, pH, methoxy/hydroxypropyl values, and key impurities
Confirm whether the product is classified as dangerous goods for the selected transport mode; HPMC is commonly shipped as non-DG, but classification must be verified from SDS and carrier review
Verify export HS code with supplier and customs broker; source lists HS Code 29072300, which may not align with HPMC and should be checked before customs filing
Confirm REACH, inventory status, or local chemical notification needs for the importing country; do not rely on marketplace listing claims
If used in building products with local standards, request third-party test reports only for the specific grade being purchased
Confirm ISO certificates, business license, and third-party inspection options such as SGS or BV if required by buyer policy
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
