ODB-2 Black Color Former, CAS 89331-94-2, for Thermal Paper Coating
Buyer-facing sourcing candidate for ODB-2 black color former, CAS 89331-94-2, offered as a white to off-white powder for heat-sensitive paper coating applications. Key checks for RFQ include CAS identity, HPLC purity, melting point, insoluble matter in toluene, ash, volatile matter or loss on drying, available batch COA, packing format, and export documentation readiness for China-origin supply.
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.: 89331-94-2Thermal paper color former / heat-sensitive dye intermediateCandidate for specification-led RFQ; requires document and CAS verification before sourcing
Chemical name shown by source: 2-Phenylamino-3-methyl-6-dibutylaminofluorane / ODB-2 black
Molecular formula: C35H36N2O3
Molecular weight: approximately 532
Appearance: white to off-white or light-colored powder
Purity: ≥99.0% stated; sample lot data shows HPLC purity around 99.69% to 99.89%
Melting point: 182-185 °C stated; standard line shows ≥183.0 °C
Loss on drying / volatile matter: ≤0.3%
Insoluble in toluene / insoluble content: ≤0.3%
Ash content: ≤0.2% shown in tabulated standard
Application reference: black image formation in heat-sensitive paper coatings
Who uses this page
Target buyers
Thermal paper coating manufacturers
Paper chemical formulators
Thermal receipt paper producers
Specialty dye and color former distributors
Industrial chemical importers supplying paper mills
Formulation houses qualifying China-origin color former supply
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 page indicates woven bag and 25-200 kg drum packing options; confirm exact commercial packing before order.
Ask whether inner liner, moisture barrier, palletization, and export carton or drum marking are available.
Confirm net weight per package, gross weight, pallet dimensions, and container loading plan for India-bound shipment.
Request photos of actual export packing and label format for CAS, batch number, net weight, origin, and consignee details.
Clarify sample availability, sample packing size, and whether sample COA matches production 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
Qualification of ODB-2 black color former for heat-sensitive paper coating formulations
Supplier comparison based on CAS identity, HPLC purity, melting point, and insoluble matter
India import RFQ for China-origin thermal paper chemical supply
Batch-to-batch quality review using COA and retained sample testing
Commercial supply planning for paper coating chemical distributors
How we compare
Sourcing options
Request a small qualification sample with COA and SDS before commercial RFQ.
Ask for both standard grade and higher-purity grade offers if available.
Compare 25 kg export drum versus bulk drum or bag packing based on buyer warehouse requirements.
Request FOB China port, CIF India port, and EXW quotations to compare logistics responsibility.
Use third-party lab testing for CAS confirmation, HPLC purity, melting point, ash, and volatile matter before bulk purchase.
Consider batch reservation after sample approval to reduce lot variation risk.
Human review
Compliance notes
Verify the exact CAS identity and chemical name against the supplier COA, SDS, and commercial invoice before import clearance.
Request current SDS, COA, TDS/specification sheet, packing list, certificate of origin, and any available REACH/RoHS/food-contact-related statements only if relevant to the buyer’s downstream market.
Confirm whether the product is classified as dangerous goods for sea or air shipment under current SDS; do not rely on marketplace text for DG status.
For export from China to India, ask the supplier and freight forwarder to confirm HS code, DG/non-DG declaration basis, labeling, and destination import documentation requirements.
Check whether the material, impurities, or downstream application are subject to buyer-country chemical inventory, BIS, customs, or end-use restrictions.
No regulatory approval or import permissibility is assumed; buyer should validate with local customs broker and compliance adviser.
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.
ODB-2 CAS 89331-94-22-Phenylamino-3-methyl-6-dibutylaminofluoranethermal paper color formerblack color former for thermal paperheat-sensitive dyethermal paper coating chemicalODB-2 China supplierODB-2 export to Indiapaper coating dye intermediateCAS 89331-94-2 COA SDS
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 product is ODB-2, CAS 89331-94-2, and provide the full chemical name used on the COA and SDS?
What is the guaranteed HPLC purity for commercial lots: ≥99.0% or ≥99.5%?
Please provide recent batch COA showing appearance, HPLC purity, melting point, insoluble content in toluene, ash, volatile matter or loss on drying, and batch size.
What impurity profile is monitored, and can you disclose key unknown impurity limits or chromatogram summary for buyer review?
Is the product supplied as technical grade, paper-coating grade, or another defined grade?
What is the standard packing: 25 kg drum, bag, carton, or 200 kg drum, and what inner packaging is used?
Can you provide current SDS and confirm DG classification for sea freight and air freight?
What HS code do you normally use for export, and can you provide China export documents for India shipment?
Checks before quote
Verify the exact CAS identity and chemical name against the supplier COA, SDS, and commercial invoice before import clearance.
Request current SDS, COA, TDS/specification sheet, packing list, certificate of origin, and any available REACH/RoHS/food-contact-related statements only if relevant to the buyer’s downstream market.
Confirm whether the product is classified as dangerous goods for sea or air shipment under current SDS; do not rely on marketplace text for DG status.
For export from China to India, ask the supplier and freight forwarder to confirm HS code, DG/non-DG declaration basis, labeling, and destination import documentation requirements.
Check whether the material, impurities, or downstream application are subject to buyer-country chemical inventory, BIS, customs, or end-use restrictions.
No regulatory approval or import permissibility is assumed; buyer should validate with local customs broker and compliance adviser.
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.
