Molecular Formula | C34H28N9NaO7S2 |
Molar Mass | 761.76 |
Melting Point | 109-110°C |
Solubility | DMSO (Slightly), Methanol (Slightly, Heated), Water (Slightly) |
Appearance | Crystalline Powder |
Color | Black |
Storage Condition | Amber Vial, Refrigerator, Under inert atmosphere |
Stability | Light Sensitive |
Physical and Chemical Properties | Brown-black powder. Soluble in water is green and black, slightly soluble in ethanol, green and blue-black, soluble in fibrin, insoluble in other organic solvents. In case of concentrated sulfuric acid, it is dark red and blue, and after dilution, it is purple sauce color to red and black precipitate; it is a yellow-brown solution in concentrated nitric acid; it is a dark red and black solution in concentrated hydrochloric acid. Its aqueous solution plus concentrated hydrochloric acid is purple sauce-colored precipitation. Add concentrated sodium hydroxide solution to generate gray precipitation. For dyeing cellulose fibers, the dye absorption is very good, and the affinity is maximum at 80 ℃. You can pull out and dye. |
Hazard Symbols | T - Toxic |
Risk Codes | R45 - May cause cancer R63 - Possible risk of harm to the unborn child R36 - Irritating to the eyes |
Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
WGK Germany | 3 |
RTECS | QJ6160000 |
TSCA | Yes |
HS Code | 29299090 |
Toxicity | LD50 orl-rat: 7600 mg/kg TSCAT* OTS 215154 |
Color index | 30235 |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
uses | is mainly used for cotton, hemp, viscose and other cellulose fiber weaving and dyeing, can also be used for silk, the dyeing of nylon and its blended fabric can also be used for leather, biological and wood dyeing, plastic coloring and as a raw material for red ink. Direct Black BN is a commonly used black dye, which is more commonly used alone in black, and is often combined with Brown to form a variety of Brown. mainly used for cotton, viscose, silk, hemp dyeing and printing mainly used for cotton, hemp, viscose and other cellulose fiber weaving and dyeing, can also be used for silk, the dyeing of nylon and its blended fabric can also be used for leather, biological and wood dyeing, plastic coloring and as a raw material for red black water. Direct Black BN is a commonly used black fuel, which is more often used alone in black, and is often combined with Brown to form a variety of Brown. cytology and histological staining. |
production method | with benzidine, H acid, aniline and M-phenylenediamine as the basic raw materials. Benzidine is diazotized and coupled with H acid (first coupling). After diazotization of aniline, a second coupling is carried out with the first coupling, followed by a third coupling with M-phenylenediamine, followed by salting out, obtained by filtration and drying. Kg/ton of benzidine (100%) 180 aniline 80H acid (100%) 300 m-phenylenediamine (100%) 70 soda ash (industrial) 190 Sodium nitrite (industrial) 195 calcium carbonate 25 hydrochloric acid (31%) 550 ammonia water (20%) 150 sodium sulfate 40 |
category | toxic substances |
toxicity grade | low toxicity |
Acute toxicity | oral-rat LD50: 7600 mg/kg; Inhalation-rat LCL0: 180000 mg/m3/1 h |
stimulation data | eyes-rabbit 100 mg moderate |
flammability hazard characteristics | flammable; Combustion produces toxic nitrogen oxides, sulfur oxide and sodium oxide smoke |
storage and transportation characteristics | warehouse ventilation and low temperature drying |
fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |