# Dithiothreitol (DTT) [C4H10O2S2] Molecular Weight Calculation

The molecular weight of Dithiothreitol [C4H10O2S2] is 154.2536.

Dithiothreitol (C4H10O2S2) is an organic compound of four elements: Carbon, Hydrogen, Oxygen, and Sulfur. The molecular weight of Dithiothreitol is 154.2536 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Dithiothreitol  [C4H10O2S2] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Dithiothreitol molecule.
You will know different atoms and their number in a Dithiothreitol molecule from the chemical formula. The chemical formula of Dithiothreitol is C4H10O2S2. From the chemical formula, you can find that one molecule of Dithiothreitol consists of four Carbon (C) atoms, ten Hydrogen (H) atoms, two Oxygen atoms, and two Sulfur (S) atoms.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Carbon (C): 12.0107 (Ref: Jlab-ele006)
Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)

Atomic weight of Sulfur (S): 32.066 (Ref: Jlab-ele016)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the total weight of each atom in a Dithiothreitol molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Dithiothreitol: 4
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Dithiothreitol: 12.0107 x 4 = 48.0428

Number of Hydrogen atoms in Dithiothreitol: 10
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Dithiothreitol: 1.008 x 10 = 10.08

Number of Oxygen atoms in Dithiothreitol: 2
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Dithiothreitol: 15.9994 x 2 = 31.9988

Number of Sulfur atoms in Dithiothreitol: 2
Atomic weight of Sulfur (S): 32.066
Total weight of Sulfur atoms in Dithiothreitol: 32.066 x 2 = 64.132

Step 4: Calculate the molecular weight of Dithiothreitol by adding up the total weight of all atoms.

Molecular weight of Dithiothreitol: 48.0428 (Carbon) + 10.08 (Hydrogen) + 31.9988 (Oxygen) + 64.132 (Sulfur) = 154.2536

So the molecular weight of Dithiothreitol is 154.2536.

Dithiothreitol [C9H21O2PS3] Molecular Weight Calculation

## REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml
• Jlab-ele006: https://education.jlab.org/itselemental/ele006.html
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Jlab-ele016: https://education.jlab.org/itselemental/ele016.html