Nigrosine WSJ
Acid black 2
CAS: 8005-03-6
Molecular Formula:
Nigrosine WSJ - Names and Identifiers
Nigrosine WSJ - Physico-chemical Properties
| Water Solubility | SOLUBLE |
| Solubility | H2O: soluble |
| Appearance | powder |
| Color | Red-black to black |
| Maximum wavelength(λmax) | ['570 nm'] |
| Storage Condition | Store at RT. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| MDL | MFCD00044681 |
| Physical and Chemical Properties | Black with flashing grains. Soluble in water, the aqueous solution is blue-purple, and the addition of sodium hydroxide solution produces a Brown-purple precipitate. Soluble in ethanol, blue. In concentrated sulfuric acid is also blue, diluted into purple, and precipitation. |
| Use | Biological staining, such as central nervous tissue, pancreatic tissue, cell spores, etc. |
Nigrosine WSJ - Risk and Safety
| Risk Codes | R43 - May cause sensitization by skin contact R45 - May cause cancer |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S24/25 - Avoid contact with skin and eyes. S24 - Avoid contact with skin. S22 - Do not breathe dust. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. |
| WGK Germany | 3 |
| RTECS | GC4762250 |
| TSCA | Yes |
| HS Code | 32041200 |
Nigrosine WSJ - Introduction
A mixture of sodium salts of alcohol-soluble melanin sulfonated products. Soluble in water, the solution is blue-purple or blue-black, soluble in ethanol, soluble in blue, almost insoluble in ether, acetone, benzene, chloroform, petroleum ether and liquid paraffin. The maximum absorption wavelength is 570nm.
Last Update：2022-10-16 17:29:00
Nigrosine WSJ - Reference Information
| Application in biological field | Diagnostic assay |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| uses | acid particle elements are mainly used for dyeing wool and silk, and also for leather dyeing (usually by Chrome Mordant dyeing), as well as paper, wood products, soaps, and the coloring and manufacturing of anodized aluminum inks. Biological staining, such as staining of central nervous tissue, pancreatic tissue, cellular spores, etc. mixture of the sodium salt of the sulfonated product of the alcohol-soluble black pigment. Biological staining, such as central nervous tissue, pancreatic tissue, cell spore staining. mainly used for leather, silk and wool dyeing, can also be made into Lake for color paper and printing |
| production method | with alcohol-soluble nigrosine as raw material, sulfonated with concentrated sulfuric acid, separated and washed with waste acid, the product was obtained by neutralization with sodium hydroxide. The final product was obtained by filtration and drying. Alcohol-soluble aniline black (C.I.50415) process: nitrobenzene, aniline and aniline hydrochloride together with iron or copper are heated at 180-200 °c to give the product. After Acid washing, washing, filtering, drying to obtain the finished product. Alternatively, the product can be obtained by heating nitrophenol (or nitrocresol), aniline, aniline hydrochloride together with a small amount of iron at 180-200 °c. After Acid washing, washing, filtering, drying to obtain the finished product. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:05:15
Supplier List
Spot supply
Product Name: Acid black 2 Request for quotationTel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Nigrosine water soluble Visit Supplier Webpage Request for quotationCAS: 8005-03-6
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
Spot supply
Product Name: Acid black 2 Request for quotationTel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Nigrosine water soluble Visit Supplier Webpage Request for quotationCAS: 8005-03-6
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History