CD-3 Color Developing Agent CAS 24567-76-8 for Film & Photo Paper
Zhishang Bio CD-3 CAS 24567-76-8
CAS:24567-76-8 | C12H21N3O2S.1.5H2SO4.H2O |MW：836.999 | EINECS NO：206-103-9
Payment: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
Transporta: Ocean, Land,Air, DHL，TNT
Port: Shanghai Port, Qingdao Port
CD-3 Description
Technical Overview: Color Developing Agent CD-3 (CAS 24567-76-8)
Color Developing Agent CD-3 (CAS 24567-76-8) serves as the core p-phenylenediamine backbone required for precision chromogenic photographic processing. Emulsion engineers utilize this specialized organic salt—technically known as N-{2-[(4-Amino-3-methylphenyl)ethylamino]ethyl}methanesulfonamide sesquisulfate monohydrate—to drive targeted color coupling mechanics in modern print papers and reversal films. Physically, this light-sensitive substance presents as a highly refined white to light pink crystalline powder with a melting point range of 126–130°C. For exact blending control, a 5% aqueous solution of this developer yields a sharp, acidic pH profile running between 1.38 and 1.78, dissolving cleanly into water-soluble developer baths without leaving particulate artifacts.
The Mechanism of Chromogenic Dye Coupling
[Exposed Silver Halide] + [Active CD-3] ➔ [Metallic Silver Deposit] ➔ [Oxidized CD-3 Intermediate] ➔ [Dye Coupler Reaction] ➔ [Cyan, Magenta, Yellow Dyes]
The workflow sequence above illustrates the synchronized, single-step reduction and dye-generation loop. To maintain absolute chemical integrity inside your processing tanks, our isolation loops enforce the following rigid parameters:
| Analytical Parameter | Checked Value Profile | Operational Benefit |
|---|---|---|
| Active Titration Purity | \(\ge \) 99.00% (validated by HPLC) | Prevents color balance shifts |
| Total Volatiles Cap | \(\le \) 0.10% | Extends tank life stability |
| Ash Content Maximum | \(\le \) 0.10% | Minimizes emulsion contamination |
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Product Images & Packaging
Product Parameters
| Color Developing Agent CD-3 Basic information |
| Product Name: | Color Developing Agent CD-3 |
| Synonyms: | N-4-Ethyl-N-4-(4-methanesulfonamidoethyl)-2-methyl-1,4-phenylenediamine; |
| CAS: | 24567-76-8 |
| MF: | C12H21N3O2S.1.5H2SO4.H2O |
| MW: | 836.999 |
| EINECS: | 206-103-9 |
| Product Categories: | Intermediate;CD-3 |
| Mol File: | 24567-76-8.mol |
Why Partner with Zhishang Bio?
1. Massive Monthly Output & Secured Spot Buffers
We shield your film processing plants from sudden raw material bottlenecks by anchoring a 8-metric-ton inventory buffer at our specialized climate-controlled chemical depot. Our automated synthesis lines operate continuous purification loops that push out a steady monthly output of 30 tons of premium-grade agent. This large-scale infrastructure ensures you bypass market shortages and logistics delays. Whether your current manufacturing campaign requires a small pilot-scale sample lot or a multi-ton bulk factory container fleet, your cargo clears our loading dock within 48 hours.
2. Advanced Low-Ash Crystallization Technology
Our technical division engineered a low-temperature isolation process that drops total ash and volatile contamination down to a strict maximum of 0.10%. This precise control stops unexpected side reactions inside your chemical baths, saving you from expensive downstream filtration and bath replacement costs. We monitor every single batch with automated high-performance liquid chromatography (HPLC) to guarantee an exact CD/H acid value profile of 1.500±0.010 across multi-year contracts. Your quality assurance team receives an official, factory-direct Certificate of Analysis (COA) before the material ever enters your facility.
CD-3's Procurement Guide
Procurement Guidelines
1. Sample Policy
We can provide a 2-3g free trial package (shipping fee required)
2. Batch procurement
Packaging: 25kg/bag; 220kg/barrel; Special packaging according to your needs
MOQ：1kg
3. Customized services
Concentration customization (90% -99%)
Paeonol’s outsourcing services
FAQ
Why does high-purity CD-3 give better color rendering than lower-grade lots during paper processing?
It comes down to impurity control inside your development tanks. Lower-grade chemical alternatives often carry volatile residues and trace synthesis byproducts that disrupt the delicate electron transfer during silver halide reduction. Our 99.0% pure Color Developing Agent CD-3 ensures a clean, controlled reduction speed. This predictable kinetics stops crossover contamination and prevents unexpected density shifts in your cyan, magenta, and yellow dye layers
This aromatic amine salt is highly sensitive to atmospheric moisture, heat, and ambient UV exposure. Contact with light or oxygen causes the crystalline structure to oxidize, turning the powder into a deep dark red or brown aggregate that destroys its reduction power. To safeguard the 12-month shelf life, store the material inside hermetically sealed fiber drums under dry, dark conditions held strictly below 25°C.
Our analytical laboratory runs multi-stage HPLC checks paired with precise automatic potentiometric titrators to map the exact chemical profile. We track active purity, melting range, residual moisture, and the critical CD/H acid balance for every single batch. We archive identical reference samples from each batch to establish an airtight, verifiable audit trail for your compliance team.
The difference lies in the specific dye-coupling mechanics and emulsion compatibility. CD-3 features a methanesulfonamide side chain that alters its electrochemical potential, making it the global industry standard for color print papers and reversal E-6 systems. CD-4 utilizes a different alkyl structure tailored for C-41 color negative film processing. Swapping these agents in an uncalibrated system will ruin your contrast curves and cause permanent color cast failures.
Manufacturer of CD-3
Achievements
Advantage
Service
FAQ
Advice on Shipping
Achievements
Zhishang Bio is based in Shandong, serves the whole country, faces the world, and is determined to become an excellent supplier and service provider in the chemical industry.
As a top manufacturer of cosmetic raw materials, disinfectants, flavors and fragrances in China, we are committed to producing high-quality products and have won high praise from customers all over the world.
In the next 10 years or even longer, Zhishang Bio will always adhere to the tenet of quality first and reputation first, and devote itself to providing customers with thoughtful and perfect services.
As a professional CD-3 manufacturer, Zhi shang Bio has served more than 6,000 customers around the world. Because of our high-quality products and professional services, we have won high praise from most of our customers.
Advantage
Zhishang Bio is a professional enterprise engaged in the research and development, production, and sales of chemical raw materials. It has a strong supply chain system and strict quality control standards to ensure the provision of high-quality products with high purity and stability to customers.
Zhishang Bio’s core strength is its independent research and design capabilities. It has advanced production equipment, testing laboratories and can customize chemical raw materials to meet the market demands. This includes pharmaceuticals, electronic, coatings and agricultural applications.
Zhishang Bio’s supply chain management is based on long-term relationships with domestic and international suppliers of high quality to guarantee a stable supply, optimize logistic systems, and achieve efficient distribution. This helps reduce the cost of customer purchases.
We adhere to international environmental standards and we also adhere to the concept that environmental protection and safety production are important. All production processes must comply with these standards in order to guarantee that our products will be green and sustainable.
With a professional technical team and comprehensive after-sales service, Zhishang Bio can provide customers with precise technical support, solve application problems, and help customers enhance product competitiveness.
We are always customer-oriented and committed to becoming a trusted chemical raw material partner.
Service
Zhishang Biography is dedicated to using clients extensive and expert service, including chemical raw material. The customers will certainly receive hassle-free, efficient and one-stop options.
1. Custom-made Supply Solutions
Zhishang Bio provides tailored services for clients in the chemical basic material sector, including special bit dimension, solvent residue control, stability optimizations and more. Clients can personalize their services to satisfy details requirements in industries such as drugs, electronic devices, and finishings.
2. Strict quality assurance
Zhishang Bio utilizes advanced screening equipment and stringent quality examination procedures, in addition to various other files, to guarantee that every batch of products is certified with international criteria such ISO GMP, REACH, and so on. Customers are also given with full quality records and conformity documents.
The supply chain is secure
Zhishang Bio has actually established lasting calculated collaborations with worldwide makers of top notch raw materials to make certain a secure supply, maximize the storage facility and logistics system, and assistance both small-scale examinations and large orders. It adjusted to the changing requirements of clients by responding flexibly to these changes.
4. Technical support
Zhishang Bio’s technical group can offer suggestions on product applications, formula optimization and analysis of industry patterns to aid clients fix technological troubles during production and boost item efficiency.
5. Efficient after-sales service
Zhishang Bio provides complete monitoring, reacts to client requests and delivers promptly. This will certainly make certain customer complete satisfaction.
Zhishang Biography intends to help consumers expand their service by providing the very best solutions and chemical resources.
FAQ
DO YOU ACCEPT SAMPLE ORDER?
We will make samples before mass production. After the samples are approved by the department and users, we will start mass production. During the production process, we will carry out 100% inspection, and then carry out random inspection before packaging.
WHAT’S YOUR MOQ?
Our MOQ is 1kg. But usually we can also accept a smaller quantity, such as 100g, if you need it, provided that the sample fee is 100% paid.
IS THERE A DISCOUNT?
Different quantity has different discount.
HOW TO CONFIRM WHETHER THE PRODUCT QUALITY MEETS OUR NEEDS BEFORE PLACING AN ORDER?
You can consult us to get free samples of some products, you only need to pay the freight or arrange express delivery to us and get the samples. You can send us the product specifications and requirements you need, and we will manufacture products according to your requirements.
DO YOU SUPPLY PRODUCT REPORT?
Yes. We’ll give you product analysis report before shipping.
LEARN MORE ABOUT US
Shandong Look Chemical
Advice on Shipping
1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
Company Info
Zhishang Bio company in China that exports chemicals, Cosmetic raw materials, and Intermediates for over 70 countries now.
And a range of 50,000 products with the best quality and competitive price to meet your different purchasing needs.
The company integrates research and development, production, and trade, with a modern production base, advanced testing equipment, and an experienced technical team to ensure that products reach industry-leading levels in purity, stability, and environmental friendliness.
