What is the molar mass of blue dye 1?

What is the molar mass of blue dye 1?

792.85 amu
FD&C Blue no. 1

How do you find the molecular weight of a dye?

Molecular weight can be determined by using the molecular formula, which consists of the chemical symbols of each element represented in the molecule with an associated subscript number showing how many atoms of that specific element are present in the molecule as well.

What is the concentration of blue dye #1?

2.2 x 10-6 M
Now that we have calculated the concentration of Blue #1 dye in our drink to be 2.2 x 10-6 M, we can determine if this exceeds the acceptable daily intake (ADI) of Blue #1 set by the Joint FAO/WHO Expert Committee on Food Additives. The ADI level for Blue #1 is 12.5 mg per kg of body mass.

How do you determine concentration of a dye?

You will use the absorption of visible light to determine concentration and to identify different dyes. If the concentration of a solution is unknown, the concentration can be measured by determining the amount of light it absorbs (its absorbance, A) at a particular wavelength (λ), using a spectrophotometer.

What is blue No 1 made of?

Blue No. 1 is called “brilliant blue” and, as is typical of modern dyes, was originally derived from coal tar, although most manufacturers now make it from an oil base. Blue No. 2, or “indigotine,” on the other hand, is a synthetic version of the plant-based indigo that has a long history as a textile dye.

What is the molar absorptivity of the blue dye?

To demonstrate the use of evanescent sensing for liquid concentration measurements, 400 nl droplets of aqueous solutions of FD&C Blue 1 dye (molar absorptivity = 1.38 x 10-5 M-1 cm-1) were transported across the beam path at a speed of 250 µm/s.

What is the molar mass of Erioglaucine?

783.0
C.I. Acid Blue 9

What is blue No 2?

FD&C Blue No. 2 is also called indigo blue or indigotine. It is a synthetic version of indigo, a dye naturally produced from plants. Indigotine, on the other hand, is a petroleum product, with the chemical formula C16H10N2O2. It is used in baked goods, cereals, ice cream, snacks, candies and cherries.

What is the molar absorptivity of the blue dye cm 1m 1?

248 L mol-1
The molar absorptivity of the dye is the slope (A = ε b c or y = mx) since b = 1. Thus, molar absorptivity = ε = 248 L mol-1 cm-1.

What is the molar mass of FD&C Blue 1 dye?

The molar mass of FD&C Blue 1 dye is 792.84 g/mol. Retain three significant digits. 2. Using a P1000 autopipet, measure 1.000 mL of the stock solution. 3. Transfer into a 100-mL volumetric flask. Add water up to the 100-mL mark.

How to calculate the mass of blue dye in a sample?

Determine the mass of Blue #1 Dye found in 591 mL of the drink. Show all work. 2. Write the full equation (y = mx + b format) for the best fit line on the graph you just created using the slope. 3. The slope of the line is derived from the molar absorptivity (ε) of the dye and the path length (b) of the sample in the spectrophotometer.

How do you calculate the concentration of dye in a solution?

Calculations: Molar concentration of dyes present in each solution Use the Beer-Lambert Law equation (A = εbc), your measured absorbance values, and the molar absorptivity values in Table 1 below to calculate the molar concentration of each dye present in the four solutions tested. Write your answers in Data Table 2.

How to calculate the absorbance of the Blue Drink?

Absorbance of the blue drink: at nm 1. Determine the molar concentration of the Blue Dye in the drink. Show all work. 2. Determine the mass of Blue #1 Dye found in 591 mL of the drink. Show all work. 2. Write the full equation (y = mx + b format) for the best fit line on the graph you just created using the slope.