Product Description
Basic Red 51 is a monoazo compound with the chemical names 4-((1,3-dimethylimidazole-1-onium-2-diazo)-N,N-dimethylaniline chloride) or 2-((4-(dimethylamino)phenyl)azo)-1,3-dimethyl-1H-imidazolium chloride. It typically appears as a blue to dark purple powder, though it may occasionally form lumps.

Properties
| Product Name: | Basic Red 51 |
| Synonyms: | BASIC RED 51;C.I. BASIC RED 51;Red M-RL;Basacryl Red X-BL;Maxilon Red M-RL;4-[(1,3-dimethylimidazol-1-ium-2-yl)diazenyl]-N,N-dimethylaniline;Basic Red 51 - Technical grade;Basic Red 51 ISO 9001:2015 REACH |
| CAS: | 12270-25-6 |
| MF: | C13H18ClN5 |
| MW: | 279.76852 |
| EINECS: | |
| Product Categories: | |
| Mol File: | 12270-25-6.mol |
| storage temp. | Refrigerator, Under inert atmosphere |
| solubility | Methanol (Slightly, Sonicated), Water (Slightly) |
| form | Solid |
| color | Very Dark Blue to Black |
| CAS DataBase Reference | 12270-25-6 |
Product Usage
Textile Industry: Basic Red 51 is widely used for dyeing acrylic fibers and their blends, providing fabrics with a bright red hue. It is also suitable for dyeing modified polyester fibers, delivering specific color effects.
Paper Industry: It can be applied in paper dyeing to achieve the desired red shade, commonly used in the production of specialty papers such as art paper and wrapping paper.
Cosmetics Industry: Primarily used in hair dyes, Basic Red 51 imparts a red tone to hair, catering to diverse hair color preferences.
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Company Profile
Shandong Rongsheng Chemical Co., Ltd. is a manufacturing‑oriented chemical supplier operating in Shandong’s key chemical industrial cluster. We focus on supplying bulk basic chemicals, dyestuffs & pigments, fine‑chemical intermediates and multi‑functional additives, integrating technical consultation, domestic channel distribution and global market outreach. Our product portfolio serves textile, cosmetic, coating, polymer and water‑treatment related industrial sectors.
Supported by standardized manufacturing facilities, we carry out strict multi‑stage quality control covering raw material incoming inspection through finished‑product release, delivering reliable factory‑direct supplies. Without redundant intermediate links, we provide global buyers with flexible procurement solutions: large‑volume bulk consignments, customized formulation adjustment, personalized packaging options and small‑lot sample provision. Our flexible production capacity adapts to diverse‑size orders and ensures dependable delivery schedules.
Our overseas sales team boasts profound hands‑on experience in chemical cross‑border trade. Well‑versed in import compliance regulations and international logistics arrangements across different regions, we deliver full‑chain export services for overseas partners: inquiry follow‑up, sample coordination, tailored solution matching, customs clearance, cargo dispatching and long‑term after‑sales support.
We take stable product quality and trustworthy business integrity as core principles for mutually‑beneficial cooperation. Drawing on consistent product performance, versatile service frameworks and fully regulation‑compliant logistics channels, we provide cost‑competitive and solid supply‑chain solutions for worldwide clients. We sincerely hope to build durable business partnerships and achieve joint progress within the global fine‑chemical marketplace.
