Orangish yellow
Both sodium oxide and sodium chloride contain sodium ions which exhibit a characteristic yellow color when burned. This color comes from the emission of energy as the electrons in the sodium ions transition to lower energy levels. Thus, both compounds burn with a yellow flame.
Sodium Chloride, common table salt, will not burn.
The color remain unchanged for pure sodium chloride.
Crystals of pure sodium chloride are colorless.
The yellow color of the flame is due only to sodium.
Sodium chloride solution is neutral.
If you think to color pure sodium chloride crystals are transparent.
In a flame test, the presence of sodium ions from sodium chloride would produce a bright yellow color in the flame. By observing this characteristic color, we can deduce the presence of sodium chloride as an impurity in the sample being tested.
Sodium chloride doesn't burn.
Sodium chloride is colorless; any color is due to impurities.
Chloride compounds typically do not burn with a flame that has a distinct color. When chloride compounds burn, they may produce a white or colorless flame.