Red Iron Oxide Pigment Fe2O3 CAS 1309-37-1 for Coatings, Plastics and Construction Materials
Synthetic red iron oxide inorganic pigment candidate from a China-based supplier, listed with CAS 1309-37-1, EINECS 215-168-2 and Fe2O3 formula. Buyer review should focus on shade matching, particle size distribution, soluble salt level, tinting strength, dispersibility, heavy metal limits, moisture, packaging format, COA consistency and export document readiness before RFQ or sampling.
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.: 1309-37-1Inorganic pigment / synthetic iron oxide pigmentCandidate for RFQ after CAS, grade, impurity and document verification
Particle size: standard micron grade or customized by request
Claimed features: high color purity, uniform particle size, low soluble salt content, lightfastness and weather resistance
Recommended checks: shade standard, tinting strength, oil absorption, pH, moisture, residue on sieve, soluble salts, iron oxide content, heavy metals and batch-to-batch delta E
Who uses this page
Target buyers
Paint and architectural coating manufacturers
Playground surface coating formulators
Construction material and concrete colorant producers
Plastic masterbatch and rubber product manufacturers
Ceramic, ink and industrial colorant buyers
Chemical distributors sourcing inorganic pigments from China
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
Supplier lists standard packaging or customized packaging; confirm actual bag size, liner type, palletization and container loading quantity.
Request photos of export packing, marks, batch labels and pallet condition before shipment.
Confirm whether sample, pilot and full-container packaging are identical in material compatibility and moisture protection.
For playground surface coating use, ask whether packaging can support clean transfer and traceability for color-critical batches.
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
Red coloration for cement, concrete and construction materials
Pigment component for outdoor coatings requiring lightfastness and weather resistance
Colorant for plastics, rubber and masterbatch systems after compatibility testing
Industrial color formulation where low soluble salts and stable shade are important
Sample evaluation for public-area or playground surface coating projects
How we compare
Sourcing options
Request 100 g to 1 kg lab sample with COA and shade reference before bulk RFQ.
Compare standard red iron oxide grade against customized micron-size or color-matched grade.
Ask for third-party inspection, pre-shipment sample sealing and batch COA for container orders.
Source under buyer-specified impurity limits if the end use involves children-adjacent surfaces or public installations.
Consider alternate qualified suppliers for dual sourcing where color consistency and lead time are critical.
Human review
Compliance notes
Verify CAS 1309-37-1 and Fe2O3 identity against SDS, COA, TDS and commercial invoice before purchase.
Request current SDS in buyer-required language, COA by batch, TDS, RoHS/REACH statement where relevant, heavy metal test report and non-DG transport statement if applicable.
Do not rely on marketplace wording such as non-hazardous or non-toxic without reviewing SDS classification, local pigment regulations and end-use requirements.
For educational playground surface coatings, confirm compliance-relevant impurity limits with the final coating formulator, especially lead, cadmium, chromium VI, mercury, arsenic and soluble heavy metals.
Check destination-country import requirements, customs HS code, labeling and any restrictions for pigments used in children-adjacent or public-surface applications.
DG/export status should be confirmed from SDS Section 14 and freight forwarder review; iron oxide pigments are commonly shipped as non-DG, but documentation must be batch- and shipment-specific.
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.
red iron oxide pigment supplier ChinaCAS 1309-37-1 Fe2O3 pigmentsynthetic iron oxide red powderinorganic pigment for coatingsiron oxide pigment for concreteiron oxide pigment for playground coatingChina pigment manufacturerlow soluble salt iron oxide pigmentmicronized iron oxide pigmentred oxide colorant
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 provide COA, SDS, TDS and recent third-party heavy metal test reports for CAS 1309-37-1 red iron oxide?
What are the standard values and tolerances for Fe2O3 content, tinting strength, particle size distribution, moisture, soluble salts, pH and oil absorption?
Which red shade grades are available, and can you match a buyer-provided standard with delta E control?
Is this product synthetic iron oxide only, or are there blends, surface treatments or additives included?
What is the minimum order quantity for sample, trial order and commercial shipment?
What are the standard export package sizes, pallet dimensions and net weight per 20 ft container?
Can you supply batch-retained samples and maintain the same grade specification for repeat orders?
Are REACH, RoHS, EN 71-3 or other end-use-related declarations available for review where applicable?
Checks before quote
Verify CAS 1309-37-1 and Fe2O3 identity against SDS, COA, TDS and commercial invoice before purchase.
Request current SDS in buyer-required language, COA by batch, TDS, RoHS/REACH statement where relevant, heavy metal test report and non-DG transport statement if applicable.
Do not rely on marketplace wording such as non-hazardous or non-toxic without reviewing SDS classification, local pigment regulations and end-use requirements.
For educational playground surface coatings, confirm compliance-relevant impurity limits with the final coating formulator, especially lead, cadmium, chromium VI, mercury, arsenic and soluble heavy metals.
Check destination-country import requirements, customs HS code, labeling and any restrictions for pigments used in children-adjacent or public-surface applications.
DG/export status should be confirmed from SDS Section 14 and freight forwarder review; iron oxide pigments are commonly shipped as non-DG, but documentation must be batch- and shipment-specific.
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.
