Basic Red 2
Safranine O
CAS: 477-73-6
Molecular Formula: C20H19ClN4
Basic Red 2 - Names and Identifiers
| Name | Safranine O |
| Synonyms | Safranine C.I. 50240 SafranineT Safranin O Safranin T Safranine O Basic Red 2 C.I. Basic Red 2 Safranin T solution C.I. Basic Red 2 (8CI) Grams safranin solution safranin solution acc. to olt 3,7-Diamino-2,8-dimethyl-5-phenylphenazinium chloride 3,7-diamino-2,8-dimethyl-5-phenylphenazin-5-ium chloride |
| CAS | 477-73-6 |
| EINECS | 207-518-8 |
| InChI | InChI=1/C20H18N4.ClH/c1-12-8-17-19(10-15(12)21)24(14-6-4-3-5-7-14)20-11-16(22)13(2)9-18(20)23-17;/h3-11H,1-2H3,(H3,21,22);1H |
Basic Red 2 - Physico-chemical Properties
| Molecular Formula | C20H19ClN4 |
| Molar Mass | 350.85 |
| Density | 1.00 g/mL at 20 °C |
| Melting Point | >240℃ (decompose) |
| Boling Point | 507.14°C (rough estimate) |
| Flash Point | 46 °C |
| Water Solubility | soluble |
| Solubility | Easily soluble in water into a red solution, soluble in ethanol red with yellow fluorescence. For hydrochloric acid, it is a blue-red solution, too much is purple, too much is turned blue, and for sodium hydroxide, it generates a brown-red precipitate. For sulfuric acid, it is a green solution. When diluted, it first turns blue, gradually turns purple, and finally turns red. |
| Appearance | reddish brown powder |
| Storage Condition | Room Temprature |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00011759 |
| Physical and Chemical Properties | The chemical properties are red when dissolved in water, and red when dissolved in ethanol (with yellow light and red fluorescence). It is green in concentrated sulfuric acid, blue after dilution, and turns red. The aqueous solution is added with sodium hydroxide to produce a brown-red precipitate, and the addition of hydrochloric acid is blue-purple. |
| Use | Uses basic PEACH RED is mainly used for paper coloring and preparation of Lake organic pigments. Can also be used for acrylic, hemp, silk dyeing and bamboo, wood products coloring. |
Basic Red 2 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/38 - Irritating to eyes and skin. |
| Safety Description | S24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 1170 3/PG 3 |
Basic Red 2 - Upstream Downstream Industry
| Raw Materials | o-Toluidine 2,5-Diaminotoluene 2,5-Diaminotoluene o-Toluidine |
| Downstream Products | INDOINE BLUE |
Basic Red 2 - Reference
| Reference Show more | 1. Zhong Yi Xinhe, Hu Ke, Peng Huasheng, etc. Tissue structure and alkaloid histochemical localization of wild Corydalis yanhusuo [J]. Journal of Anhui College of Traditional Chinese Medicine, 2018, 037(005):75-78. 2. Yao Hongliang, Shen Jie, Yan Yifan. Optimization of extraction process of polyphenols from lotus root peel and its antioxidant activity in vitro [J]. Food Research and Development, 2019,40(14):103-108. 3. Liu Yu, He Yu, Li Yao, et al. Effects of parecoxib sodium on postoperative cognitive function in aged rats [J]. Journal of Southeast University (Medical Sciences), 2019, v.38;No.173(01):25-28. 4. Chen, Lanlan, et al. "Effects of one haustorium-inducing quinone DMBQ on growth and development of root hemipasitic plant Monochasma savatieri." CIERE ncia Rural 50 (2020).https://doi.org/10.1590/0103-8478cr20190649 |
Basic Red 2 - Introduction
Open Data Unverified Data
Basic Red 2, also known as Red Basic Dye 2, is a synthetic organic compound and a type of basic dye. It is widely used in various industries including textile, paper, leather, and plastics for dyeing purposes.
Chemically, Basic Red 2 belongs to the class of azo dyes and comprises a benzene ring, a pyridine ring, and a pair of substituent groups. These substituent groups commonly include methoxy, ethoxy, or pyridine groups. The chemical formula of Basic Red 2 is C20H22N4O with a molecular weight of 338.42.
Basic Red 2 exhibits excellent dyeing properties and lightfastness. It has the capability to chemically react with the surface of fiber materials, forming stable dye complexes. This imparts good affinity and durability for dyeing of textiles. Moreover, Basic Red 2 displays remarkable resistance against UV radiation, preserving the vibrant color and gloss of the dyed products.
Basic Red 2 finds extensive applications in the textile, leather, and plastics industries. It can be used for dyeing various fiber materials such as cotton, linen, silk, and synthetic fibers, producing vivid red shades. Additionally, Basic Red 2 is utilized in the formulation of inks, coatings, and other pigments, as well as fluorescent dyes and biological stains.
It is important to note that Basic Red 2 is a chemical dye, and its concentration and dyeing conditions must be carefully controlled during application to ensure uniform penetration, excellent color fastness, and compliance with environmental regulations.
Last Update：2024-04-09 19:43:38
Basic Red 2 - Introduction
(For reference only) Safranine O is a cationic dye, and its heterodyeability is not obvious. It is used to detect variations in joint diseases. Safranine O specifically binds to polyanions. It detects the amount of proteoglycan present in cartilage. Safranine O is used as a marker for glycosaminoglycan consumption in osteoarthritis. Safarine is used as a re-staining agent in Gram staining. Safranine O has been used for histological analysis of femur. It is also used to detect the presence of glycosaminoglycans in meniscus structures.
Last Update：2022-10-16 17:25:22
Basic Red 2 - Uses and synthesis methods
use
1. Redox indicator; biological staining; acid-base indicator; drip analysis of nitrite
2. Reagents for microanalysis of nitrous acid. Redox indicator, acid-base indicator, biological stain. High-purity chromosome staining used in Flemming triple staining; Gram-negative bacteria in Giemsa staining; Plant cells were stained in Safranine-fast green FCF staining.
3, detergent, denaturant, lytic cell
4, detergent, denaturant, bacterial lysis, SDS-PAGE
5, a biological stain, chemical reduction indicator, acid-base indicator.
6. Used as a reagent for microanalysis of nitrous acid, redox indicator, acid-base indicator, biological stain
production method
Using 2, 5-diaminotoluene, o-toluidine and aniline as raw materials, first the equimolar 2, 5-diaminotoluene is oxidized with o-toluidine, then condensed with aniline, and transformed into chloride through refined crystallization. To obtain the finished product.
category
toxic substances
toxicity classification
Poisoning
acute toxicity
intravenous-rat LD50: 28.74 mg/kg; Oral-mouse LD50: 1600 mg/kg
flammability hazard characteristics
Flammable; combustion produces toxic nitrogen oxides and chloride fumes
storage and transportation features
Warehouse ventilation and low temperature drying
fire extinguishing agent
Dry powder, foam, carbon dioxide, mist water
Last Update：2024-04-10 22:29:15
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Raw Materials for Basic Red 2
Downstream Products for Basic Red 2