The chemical formula of brine is MgCl2.

Definition 1 of brine: liquid minerals with a salt content greater than 5%.

The brine that collects on the earth's surface is called surface brine or lake brine.

What gathers below the ground is called underground brine.

What is gathered together with petroleum is called petroleum brine.

Definition 2 of brine: In the process of cooking food, the liquid substance prepared by various edible spices is also often called marinade and is used to make various kinds of braised dishes.

Definition 3 of brine: The scientific name of brine is salt brine, which is a mixture of magnesium chloride, magnesium sulfate and sodium chloride.

Baking tofu in brine is a process of colloid sedimentation and no chemical reaction occurs.

First aid treatment: 1. Feed a large amount of cooked soy milk, so that the bittern in the stomach interacts with the soy milk to form tofu and eliminate the toxicity of the bittern.

Do not use raw soy milk, as raw soy milk is also toxic, or use milk, which absorbs heavy metals.

2. When soy milk is not available, first pour rice soup, then warm boiled water, use your fingers to stimulate the posterior pharyngeal wall, induce vomiting and gastric lavage, repeat several times.

3. Take egg white, milk, thick rice soup or batter orally after gastric lavage to protect the gastric mucosa.

4. If possible, ask your nearest doctor to slowly inject 10 ml of 10% calcium chloride or 10 ml of 10% calcium gluconate intravenously to reduce the toxic effects.