Molecular Formula | C28H22N5NaO14S4 |
Molar Mass | 803.73 |
Density | 0.513[at 20℃] |
Melting Point | >300°C |
Water Solubility | 10g/L at 31.8℃ |
Solubility | DMSO (Slightly), Methanol (Slgihtly, Heated), Water (Slightly) |
Appearance | Powder |
Color | Black |
Storage Condition | room temp |
MDL | MFCD00078980 |
Physical and Chemical Properties | Black powder or granules. Soluble in water. Slightly soluble in ethanol. |
WGK Germany | 2 |
RTECS | QJ5950000 |
HS Code | 32041919 |
color index | 28440 |
LogP | 2.855 |
use | food black 1 Chinese alias bright black (food black 1), is a kind of synthetic colorant, often used as edible black pigment. Examples of food black 1 applications are as follows: the preparation of a coloring dye, belonging to the field of aluminum alloy die casting coloring. Eat black pigment. |
detection | a method for LC-MS/MS determination of bright black (food black 1) and rhodamine B in food, which is characterized in that it comprises the following steps: (1) preparation: crushing representative samples, stirring and evenly sealing marks for later use; (2) extraction: take the sample in step (1), place it in a centrifuge tube, add ultrapure water, ultrasonic extraction at 50-70 ℃ in water bath for 10-30min, centrifuge in centrifuge for 5-15min at 4000r /min, remove the supernatant and adjust the pH value to 3-6 with citric acid aqueous solution to obtain the solution to be purified; (3) purification: a, solid phase extraction column assembly: 40-60 μm cation exchange filler and 40-60 μm anion exchange filler are taken, fill in a polypropylene column with a polyethylene sieve plate at the bottom, and fix the upper end of the filler with a polyethylene sieve plate; B, column activation: the above solid phase extraction column is activated with water and methanol with pH value of 6-7 in turn; c, sample addition and leaching: transfer the above solution to be purified to a solid phase extraction column, and rinse the SPE column with water and methanol with pH value of 3-6 in sequence; d, elution: low vacuum blow-dry SPE column, elute and receive the components to be analyzed with ammoniated methanol, blow-dry the collected liquid with nitrogen at 50 ℃, dissolve with water, and pass through 0.22 μm filter membrane after vortex mixing for LC-MS/MS analysis. (4) detection: the sample to be tested obtained in step (3) is determined by liquid chromatography-tandem quadrupole mass spectrometry. |
identification test | solubility soluble in water; Slightly soluble in ethanol. Measured according to OT-42 method. The identification of pigment substances shall be determined according to OT-16 methods. |
content analysis | the total pigment content was determined according to method 2 in the OT-15. The conditions are as follows. The sample size was 0.6~0.7g; The buffer solution was prepared with 15g of sodium hydrogen tartrate. 0.1mol/L TiCl3 per ml is equivalent to 0.01086g of total pigment. |
toxicity | ADI 0~1 mg/kg(FAO/WHO,2001). Norway, Finland, Japan, Canada and the United States are not allowed to use food. HACSG is not allowed to be used for children's food. |
usage limit | FAO/WHO,1984(mg/kg): fermented and heat-treated flavored yogurt 12 (brought by perfume substances); Cold drink 100 (referring to 300 of the total amount of pigment in the final product). |
category | toxic substances |
toxicity classification | poisoning |
acute toxicity | abdominal cavity-rat LD50: 900 mg/kg; Oral administration-mouse LD50: 1100 mg/kg |
flammability hazard characteristics | thermal decomposition discharges toxic sodium oxide, nitrogen oxide, sulfur oxide smoke |
storage and transportation characteristics | warehouse ventilation and low temperature drying |
fire extinguishing agent | water, dry powder, dry sand, carbon dioxide, foam, 1211 fire extinguishing agent |