Descrição
IR-813 Near-Infrared Sensitizing Dye
IR-813 p-Toluenesulfonate is a Near-infrared cyanine sensitizing dye for spectral sensitization and near-infrared light absorption. The supplied COA specifies an absorption maximum of 813-817 nm in methanol and a purity specification of ≥98.0% (HPLC).
Why Evaluate IR-813?
- Near-infrared cyanine dye designed for spectral sensitization and NIR light absorption.
- The supplied COA specifies an absorption maximum of 813-817 nm in methanol.
- Purity specification of at least 98.0% by HPLC.
- Suitable for evaluation in compatible photoresist, photopolymer and light-to-heat initiating systems.
830 nm Positioning and Measured Absorption
Important wavelength clarification: The supplied SDS filename positions the product as an 830 nm infrared sensitizing dye, while the supplied COA reports an absorption maximum of 813-817 nm in methanol. Suitability for an 830 nm source should therefore be confirmed in the customer's complete formulation and process conditions.
| Nominal market positioning | 830 nm infrared sensitizing dye |
| COA absorption maximum | 813-817 nm in methanol |
| COA test medium | Metanol |
Product Information and Specifications
| Nome do produto | IR-813 p-Toluenesulfonate |
| Chemical class | Near-infrared cyanine sensitizing dye |
| Número CAS | 134127-48-3 |
| Fórmula molecular | C47H47ClN2O3S |
| Peso molecular | 755.41 g/mol |
| Appearance specification | Green crystalline powder |
| SDS physical description | Yellow-red to deep-purple crystal or powder |
| Pureza | ≥98.0% (HPLC) |
| Absorption maximum | 813-817 nm in methanol |
Appearance wording differs between the supplied documents: the COA acceptance criterion is green crystalline powder, while the SDS gives the broader physical description yellow-red to deep-purple crystal or powder. The current lot COA controls release specifications.
IR-813 in Thermal CTP Imaging
In a thermal CTP coating, the near-infrared absorbing dye converts incident laser energy into heat. In a compatible acid-generating and crosslinking system, this local heating helps form the latent image that is subsequently developed or processed according to the plate design.
Reported solubility: The reviewed source technical page reports that IR-813 is insoluble in water, slightly soluble in ethyl acetate, and soluble in methanol, ethanol, acetone and cyclohexanone. Confirm solubility using the current grade and complete formulation.
Data-quality note: The reviewed source page lists a molecular weight of 754.5, but the supplied batch COA and established product data support 755.41 g/mol. The existing product page therefore retains 755.41 g/mol.
Match the measured absorption profile to the intended 830 nm laser source and verify light-to-heat response, initiating-package compatibility, coating sensitivity and final plate performance in the complete system.
Aplicativos
- Near-infrared-sensitive photoresist formulation screening
- CTP and thermal plate imaging material development
- Near-infrared photopolymer and light-to-heat systems
- NIR laser sensitization and optical material research
Product Classification and Formulation Guidance
What IR-813 is – and is not: IR-813 is a spectral sensitizer and NIR dye. It is not categorized as a standalone Type I or Type II photoinitiator. In photoresist or photocuring use, evaluate it with a compatible initiating package, resin or monomer system and exposure source.
Formulation guidance: No universal addition level is stated in the supplied documents. Screen concentration, solubility, co-initiator or photoinitiator compatibility, film thickness, exposure dose and oxygen conditions in the intended system.
Handling, Storage and Packaging
Safety: The supplied 2019 SDS lists the substance as not classified for physical, health or environmental hazards and shows no pictogram or signal word. It also contains substantial toxicological and ecological data gaps. Use local exhaust where dust may form, avoid skin and eye contact, and wear suitable respiratory, hand and eye protection. The current SDS and applicable local regulations control.
Armazenamento: Keep the container tightly closed in a cool, dark and well-ventilated place. Protect from light and keep away from oxidizing agents.
Embalagem: The supplied COA lists 1 kg / 25 kg. Confirm current commercial packaging when requesting a quotation.
Quality Documentation
Request the current lot-specific COA and latest SDS before formulation, handling or production use. Batch-specific analytical results from an earlier COA are not presented as a universal product guarantee.
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