Starch Ether Construction Additive HPS1010, CAS 9049-76-7, 25 kg Bags
Buyer-facing sourcing candidate for a white to off-white starch ether construction additive offered as model HPS1010 for wall putty, skim coat, dry-mix mortar, tile adhesive, EIFS/ETICS, and related cementitious or gypsum-based formulations. Key checks before RFQ include confirming CAS 9049-76-7, grade identity versus HPMC/HPS descriptions, moisture 10–12%, pH around 11, powder appearance, batch COA, TDS/MSDS availability, 25 kg moisture-resistant bag packing, export documents, and DG classification confirmation for destination import.
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.: 9049-76-7, to be confirmed against supplier COA and import classificationConstruction additive / starch ether powder for dry-mix mortar and wall putty formulationsCandidate for RFQ after CAS, grade identity, SDS, and COA verification
Documents mentioned: COA, MSDS/SDS, TDS, proforma invoice, and shipping documents
Who uses this page
Target buyers
Dry-mix mortar manufacturers
Wall putty and skim coat producers
Tile adhesive formulators
EIFS/ETICS system material manufacturers
Construction chemical distributors
Importers sourcing cellulose ether and starch ether additives from China
Private-label construction additive buyers requiring export packing and documents
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
Standard packing listed as 25 kg per bag
Source text references PP woven or HDPE bags with inner PE/LDPE liner; buyer should confirm exact bag material for this starch ether grade
Package gross weight listed as 25 kg
Indicative container loading from source: 20GP about 12 tons with pallets or 14 tons without pallets; 40GP about 24 tons with pallets or 28 tons without pallets
Confirm palletization, stretch wrapping, moisture protection, container lining, and labeling requirements before order
Request photos of current export packing and batch labels for traceability
Confirm shelf-life statement and storage limitations on the supplier TDS or COA
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
Wall putty and skim coat formulation support
Anti-crack mortar and cementitious dry-mix systems
Tile adhesive workability modification where starch ether is specified
EIFS/ETICS base coat or finishing mortar additive sourcing
Self-leveling compound additive screening
Distributor stock product for construction chemical blending plants
How we compare
Sourcing options
Request a pre-shipment sample with matching batch COA before bulk purchase
Compare HPS1010 against alternative starch ether grades for viscosity, workability, sag resistance, and open-time effect
Ask for palletized and non-palletized quotations to compare landed logistics cost
Source under FOB China port, CIF destination port, or DAP/DDP only after confirming importer responsibilities and local compliance
Consider third-party inspection for quantity, packing condition, moisture, and COA match before shipment
Use a written purchase specification to lock CAS, grade name, moisture, pH, appearance, packing, and document requirements
Human review
Compliance notes
Request current SDS/MSDS in GHS format before quotation approval
Confirm whether the product is non-dangerous goods for sea/air/land transport and obtain written transport classification support where required
Verify CAS No. 9049-76-7 and chemical description because the page references both starch ether and HPMC-related packing text
Check destination-market import requirements for modified starch, construction additives, and HS Code 3505000000
Ask for COA from recent production batches showing moisture, pH, appearance, viscosity or performance index if applicable, and any agreed impurity limits
Confirm absence or limits of heavy metals, insoluble matter, ash, residual reagents, or microbial load only where relevant to the buyer’s specification
Do not rely on platform claims as regulatory approval or import clearance guarantee
Confirm labeling language, manufacturer name/address, net weight, lot number, production date, and country of origin requirements for export
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.
starch ether construction additivehydroxypropyl starch etherCAS 9049-76-7HPS1010 starch etherwall putty additiveanti-crack mortar additivedry mix mortar additive Chinatile adhesive additiveskim coat additiveconstruction chemical supplier Chinamodified starch construction grade25 kg bag construction additive
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 chemical identity: starch ether, hydroxypropyl starch ether, or another modified starch grade?
Is CAS 9049-76-7 printed on the COA, SDS, and commercial invoice for this product?
Please provide the latest COA for HPS1010 with moisture, pH, appearance, and any viscosity or performance parameters used for QC.
What are the agreed impurity or quality-control limits for ash, insoluble matter, heavy metals, residual reagents, or microbial count if applicable?
Can you provide TDS and SDS/MSDS in English with GHS classification and transport classification?
Is the product classified as non-DG for sea freight, and can this be stated in export documents if required by the forwarder?
What is the minimum order quantity, sample policy, lead time, and available monthly export capacity?
Can you confirm packing: 25 kg PP woven bag or HDPE bag, inner PE/LDPE liner, pallet option, and container loading quantity?
Checks before quote
Request current SDS/MSDS in GHS format before quotation approval
Confirm whether the product is non-dangerous goods for sea/air/land transport and obtain written transport classification support where required
Verify CAS No. 9049-76-7 and chemical description because the page references both starch ether and HPMC-related packing text
Check destination-market import requirements for modified starch, construction additives, and HS Code 3505000000
Ask for COA from recent production batches showing moisture, pH, appearance, viscosity or performance index if applicable, and any agreed impurity limits
Confirm absence or limits of heavy metals, insoluble matter, ash, residual reagents, or microbial load only where relevant to the buyer’s specification
Do not rely on platform claims as regulatory approval or import clearance guarantee
Confirm labeling language, manufacturer name/address, net weight, lot number, production date, and country of origin requirements for export
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.
