Propylene Glycol (PG) 99% Min, CAS 57-55-6, China Export Supply Check
Buyer-facing sourcing profile for Propylene Glycol (PG), CAS 57-55-6, offered as 99% min to 99.9% industrial grade from China. Overseas buyers should verify CAS identity, grade suitability, current COA values, impurity limits, packing format, export documents, and destination-market requirements before RFQ or purchase, especially where excipient, food, cosmetic, or pharma use is intended.
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.: 57-55-6Organic chemical solvent / glycol intermediateCandidate - verify grade, current COA, impurities, and export documents before RFQ award
Purity: 99.00% min stated; page also references 99.9%, to be confirmed by current COA
Moisture: 0.2% max stated; sample COA result 0.06%
Specific gravity at 20°C: 1.035-1.038 stated; sample COA result 1.037
Refractive index at 20°C: 1.428-1.435 stated; sample COA result 1.433
Alkalinity as OH: 0.04 mmol/100g max stated; sample COA result 0.01 mmol/100g
Color: APHA 5 max stated
Acidity: sample COA result 0.0046 ml / m/m stated
Who uses this page
Target buyers
Chemical importers and distributors
Industrial solvent buyers
Unsaturated polyester resin manufacturers
Paints, coatings, and plastics producers
Polyurethane and epoxy resin supply chains
Cosmetic or daily chemical manufacturers requiring grade verification
Excipient buyers only after pharmacopeial grade and documentation confirmation
India-focused importers conducting CAS, grade, and document checks
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
Available packing stated: 215 kg drum, 1000 kg IBC drum, flexitank, and ISO tank
Confirm whether drums are new, clean, sealed, and suitable for export shipment
Request net weight, gross weight, palletization, container loading quantity, and seal numbers for each packing option
For India or other overseas destinations, confirm if packaging labels, batch numbers, and shipping marks can match buyer import documentation
Ask whether sample packaging and commercial-lot packaging are from the same grade and specification
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
Industrial raw material for unsaturated polyester resin supply chains
Solvent or processing aid for coatings, plastics, and daily chemical applications
Ingredient candidate for cosmetics or personal care only after grade and regulatory review
Excipient candidate only where the supplier can document the required pharmacopeial grade, impurity profile, and import compliance
Bulk import sourcing comparison for China-origin PG with drum, IBC, flexitank, or ISO tank options
How we compare
Sourcing options
Request industrial grade PG 99% min with batch COA for coating or resin use
Request higher-purity PG 99.9% with defined impurity limits and current lot availability
Request USP/EP/BP or excipient-grade PG only if supplier can provide pharmacopeial COA and supporting quality documents
Request 215 kg drum shipment for smaller containerized orders
Request 1000 kg IBC shipment for distributor or plant use
Request flexitank or ISO tank option for bulk-volume buyers
Request third-party inspection and lab verification before balance payment
Human review
Compliance notes
CAS 57-55-6 identity and grade must be checked against the buyer's intended use and destination regulations
The page states Industrial Grade; do not assume excipient, USP, EP, BP, food grade, cosmetic grade, or pharma compliance without supplier-issued documents and third-party verification
Request current batch COA, SDS, TDS/specification sheet, Certificate of Origin, packing list, invoice, and export declaration support before order confirmation
For excipient or pharma-adjacent sourcing, request GMP-related documentation, residual impurity profile, heavy metals, aldehydes, diethylene glycol/ethylene glycol limits where applicable, and pharmacopeial compliance evidence if claimed
DG/export classification should be confirmed with the latest SDS and freight forwarder; page includes flash point information but does not provide a full transport classification
Verify shelf life, manufacturing date, retest date, storage statement on COA, and batch traceability before shipment
No regulatory approval, import clearance, or end-use suitability should be inferred from marketplace listing text
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.
Propylene Glycol CAS 57-55-6PG 99% China export1,2-Propylene Glycol supplierindustrial grade propylene glycolpropylene glycol India importpropylene glycol excipient sourcing checkpropylene glycol COA SDSpropylene glycol IBC drumpropylene glycol 215 kg drumCAS 57-55-6 China supplier
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
Is the offered material industrial grade, food grade, cosmetic grade, USP/EP/BP grade, or another defined grade?
Can you provide a current COA for the exact batch available for shipment, not only a sample or past batch report?
Does the quoted purity refer to 99.0% min or 99.9% min? Please provide the full sales specification with acceptance limits.
What are the tested limits for moisture, acidity, alkalinity, color APHA, specific gravity, refractive index, ethylene glycol, diethylene glycol, aldehydes, heavy metals, and residue on ignition?
Is the material suitable for use as an excipient for export to India only if supported by pharmacopeial and regulatory documents? If so, which documents can be supplied?
What packing options are currently available: 215 kg drums, 1000 kg IBC, flexitank, or ISO tank?
What is the MOQ for commercial shipment and what is the paid sample policy?
Can documents be provided before proforma invoice confirmation: COA, SDS, TDS, ISO certificates, Certificate of Origin, packing list draft, and label draft?
Checks before quote
CAS 57-55-6 identity and grade must be checked against the buyer's intended use and destination regulations
The page states Industrial Grade; do not assume excipient, USP, EP, BP, food grade, cosmetic grade, or pharma compliance without supplier-issued documents and third-party verification
Request current batch COA, SDS, TDS/specification sheet, Certificate of Origin, packing list, invoice, and export declaration support before order confirmation
For excipient or pharma-adjacent sourcing, request GMP-related documentation, residual impurity profile, heavy metals, aldehydes, diethylene glycol/ethylene glycol limits where applicable, and pharmacopeial compliance evidence if claimed
DG/export classification should be confirmed with the latest SDS and freight forwarder; page includes flash point information but does not provide a full transport classification
Verify shelf life, manufacturing date, retest date, storage statement on COA, and batch traceability before shipment
No regulatory approval, import clearance, or end-use suitability should be inferred from marketplace listing text
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.
