Neutral Red
- CAS No.
- 553-24-2
- Chemical Name:
- Neutral Red
- Synonyms
- Neutral Red;Basic Red 5;N2,N2,7-TriMethylphenazine-2,8-diaMine hydrochloride;Kernechrot;C.I. 50040;neutralredw;c.i.basicred5;michromeno.226;cervenneutralni;cervenzasadita5
- CBNumber:
- CB7853810
- Molecular Formula:
- C15H16N4.ClH
- Molecular Weight:
- 288.78
- MDL Number:
- MFCD00012651
- MOL File:
- 553-24-2.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| Neutral Red for microscopy (Bact., Bot., Fl., Hist., Vit.), indicator (pH 6.8-8.0) | 72210 | 5g | $35.3 |
| Neutral red (C.I. 50040) indicator and for microbiology | 1.01369 | 25g | $224 |
| Neutral red (C.I. 50040) indicator and for microbiology | 1.01369 | 100g | $785 |
| Neutral red (C.I. 50040) for microscopy Certistain? | 1.01376 | 25g | $149 |
| Basic Red 5 | N0315 | 25g | $50 |
| More product size | |||
| Melting point | 290 °C (dec.) (lit.) |
|---|---|
| Boiling point | 441.31°C (rough estimate) |
| Density | 1.1590 (rough estimate) |
| bulk density | 350-500kg/m3 |
| refractive index | 1.6110 (estimate) |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: soluble10mg/mL |
| form | Solid |
| Colour Index | 50040 |
| pka | 6.7, 7.4(at 25℃) |
| color | Very dark green |
| PH Range | 6.8(red)-8(yellow) |
| PH | 3.1 (10g/l, H2O, 20℃) |
| Odor | Odorless |
| Appearance | Solid Powder |
| Water Solubility | 50 g/L |
| λmax | 540nm, 533nm, 544nm, 529nm, 454nm |
| Merck | 14,6488 |
| BRN | 3918740 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Biological Applications | Detecting pathogens,bacterial infections; treating age-related macular degeneration,burns,cancer,diabetes,obesity,fungal infections,viral diseases |
| Major Application | Fuel cell power generation system, liquid crystal displays, solor cells, sensors, thermochromic materials, coloring wood, detergents, assessment of tobacco smoke, cosmetics, detect bacterial infections, multidrug resistance inhibitors, treatment of burns, endodontic, diabetes, obesity, cancer, age-related macular degeneration, viral diseases |
| InChI | 1S/C15H16N4.ClH/c1-9-6-13-15(8-11(9)16)18-14-7-10(19(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H |
| InChIKey | PGSADBUBUOPOJS-UHFFFAOYSA-N |
| SMILES | Cl.CN(C)c1ccc2nc3cc(C)c(N)cc3nc2c1 |
| CAS DataBase Reference | 553-24-2(CAS DataBase Reference) |
| FDA UNII | 261QK3SSBH |
| EPA Substance Registry System | Neutral Red (553-24-2) |
| UNSPSC Code | 41116130 |
| NACRES | NB.21 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P280-P302+P352 |
| PPE | Eyeshields, Gloves, type N95 (US) |
| Hazard Codes | Xn,Xi |
| Risk Statements | 68-36/37/38 |
| Safety Statements | 36/37-37/39-36-26-24/25 |
| WGK Germany | 3 |
| RTECS | SG1400000 |
| TSCA | TSCA listed |
| HS Code | 32041300 |
| Storage Class | 11 - Combustible Solids |
| Toxicity | LD50 intraperitoneal in mouse: 432mg/kg |
Neutral Red price More Price(109)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 72210 | Neutral Red for microscopy (Bact., Bot., Fl., Hist., Vit.), indicator (pH 6.8-8.0) | 553-24-2 | 5g | $35.3 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.01369 | Neutral red (C.I. 50040) indicator and for microbiology | 553-24-2 | 25g | $224 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.01369 | Neutral red (C.I. 50040) indicator and for microbiology | 553-24-2 | 100g | $785 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.01376 | Neutral red (C.I. 50040) for microscopy Certistain? | 553-24-2 | 25g | $149 | 2023-01-07 | Buy |
| TCI Chemical | N0315 | Basic Red 5 | 553-24-2 | 25g | $50 | 2026-04-30 | Buy |
Neutral Red Chemical Properties,Uses,Production
Description
Neutral red is useful as a biological stain and as an indicator for preparing neutral red paper.
Chemical Properties
dark green powder
Uses
Can be used as a vital stain, to stain living cells.
Uses
Neutral Red is a common histology stain used to determine cell viability. It is also used as indicator for nitrogen determination; pH indicator; Dyes and metabolites.
Preparation
(a) N,N-dimethyl-4-nitrosobenzenamineand 4-Methylbenzene-1,3-diaminereaction, form Toluylene Blue (Basic Dye, C.I. 49410), heating make cyclization; (b) oxidation N1,N1-dimethylbenzene-1,4-diamine, and 4-Methylbenzene-1,3-diamine mixture.
Application
Transition of pH Indicator: pH 6.8 - 8.0, red to yellow. Basic red 5 is a dye used in histology for staining nuclei. It is also a pH indicator. As such it is used in microbial culture media for differentation of bacteria. For example MacConkey agar contains it and lactose. Acidification by lactic acid turns on the Basic red 5. Therefore, colonies formed by bacteria that ferment lactose into lactic acid will turn red and stand out from the pale colonies of non-lactose-fermenting bacteria. Basic red 5 is also used in cell viability tests based on the ability to incorporate and bind it.
Definition
ChEBI: Neutral red is a hydrochloride obtained by combining the free base of neutral red with one equivalent of hydrochloric acid. Neutral red acts as a pH indicator, changing from red to yellow between pH 6.8 and 8.0. It has a role as a dye, an acid-base indicator and a two-colour indicator. It contains a neutral red(1+).
General Description
Neutral red (C.I. 50040) is a protonated diaminophenazine dye. It is aminodimethylaminomethylphenazinehydrochloride, C15H17N4Cl.
Biochem/physiol Actions
Neutral red is a widely used cationic fluorochrome that is known to accumulate in the Golgi complex and nuclei after first staining lysosomes.
Biotechnological Applications
Neutral Red is a non-toxic stain used for studies of living cells, for example to observe plasmolysis. The stain is used as an aqueous solution (0.1 %, w/v) and stains lipids in vacuoles and certain cell walls.
storage
+4°C
Staining Procedures
Neutral Red is a non-toxic stain used for studies of living cells, for example to observe plasmolysis. The stain is used as an aqueous solution (0.1 %, w/v) and stains lipids in vacuoles and certain cell walls.
Properties and Applications
red light purple and red. Soluble in water is cherry red, soluble in ethanol for product red colour with red fluorescent light brown. The strong sulfuric acid for green, blue for diluted, and then into a product red. The dye solution to join strong sodium hydroxide solution have yellow brown precipitation.
Purification Methods
In aqueous solution it is red at pH 6.8 and yellow at pH 8.0. [Beilstein 25 III/IV 3054.]
Neutral Red Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| RongNa Biotechnology Co.,Ltd | +86-86-13583358881 +8618560316533 | Brad@rongnabiotech.com | China | 3375 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21585 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29812 | 58 |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | 0531-68652808 18953170293 | sales@sdzschem.com | China | 2921 | 58 |
| Shandong chuangyingchemical Co., Ltd. | 18853181302 | sale@chuangyingchem.com | CHINA | 5906 | 58 |
| BOC Sciences | +1-631-485-4226 | inquiry@bocsci.com | United States | 19936 | 58 |
| Shenyang Simchoice Chemical Co.,Ltd | +86-024-23769576 +86-15040101888 | sales@simchoicechem.com | China | 254 | 58 |
| CONIER CHEM AND PHARMA LIMITED | sales@conier.com | China | 49979 | 58 | |
| TargetMol Chemicals Inc. | +1-781-999-5354; +1-00000000000 | marketing@targetmol.com | United States | 32468 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +86-189 4982 3763 | sales@tnjchem.com | China | 34563 | 58 |
Related Qustion
Ask a questionView Lastest Price from Neutral Red manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-08-04 | Neutral Red
553-24-2
|
$10.00 | 1ASSAYS | 99% | 1 ton | RongNa Biotechnology Co.,Ltd | |
 |
2026-08-04 | Basic Red 5
553-24-2
|
1KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD | ||
 |
2026-07-15 | Neutral red
553-24-2
|
$41.00 | 99.60% | 10g | TargetMol Chemicals Inc. |
-
- Neutral Red
553-24-2
- $10.00
- 99%
- RongNa Biotechnology Co.,Ltd
-
- Basic Red 5
553-24-2
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
-
- Neutral red
553-24-2
- $41.00
- 99.60%
- TargetMol Chemicals Inc.
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