Calcium chloride, a chemical substance consisting of chlorine and calcium, has the chemical formula CaCl2. Slightly bitter. It is a typical ionic halide with white, hard lumps or particles at room temperature. Common applications include brines used in refrigeration equipment, road deicers and desiccants. Because it easily absorbs moisture in the air and deliquesces [5], anhydrous calcium chloride must be stored in a sealed container. Calcium chloride and its hydrates and solutions have important applications in food manufacturing, building materials, medicine and biology. Calcium chloride has outstanding adsorption capacity and low desorption temperature for ammonia, and has great application prospects in the adsorption and separation of synthetic ammonia. But because calcium chloride is not easy to form a stable porous material, the contact area with gas ammonia is small, and it is easy to swell and agglomerate in the process of adsorption and desorption, so it is difficult to put it into practical application in this respect. Loading calcium chloride on a high specific surface carrier can greatly increase the contact area between calcium chloride and gas ammonia. Related studies have shown that composite adsorbents prepared by supporting calcium chloride on molecular sieves have better adsorption performance and stability than single adsorbents.
Calcium chloride
Calcium chloride
Melting point
782 ° C [1]
Antidote
1,
Identify
Prepare a 10% sample solution (calculated as anhydrous calcium chloride CaCl 2 ), which
Industrial applications
Risk Overview
Route of entry: Inhalation of dust, ingestion
Health hazards: dust can burn, irritate the nasal cavity, mouth, throat, and can cause nosebleeds and damage to nasal tissues; dry powder can irritate the skin, and solutions can severely irritate or even burn
Skin contact: Remove contaminated clothing and rinse with plenty of running water.
Eye contact: Raise eyelids and rinse with running water or saline. Seek medical attention.
Inhalation: Remove to fresh air. If you have difficulty breathing, give
1. GB 2760-96: coagulant for canned and soy products, GMP; processing aid.
GB 2760-2001: 0.44 3.7g / kg for soft drinks; 100mg / L (36rng / L as Ca) for water preparation.
2. FAO / WHO (1984, mg / kg): Canned tomatoes, 800 pieces, 450 whole pieces (calculated as Ca); 350 grape cans (calculated as Ca); canned green peas, strawberries, fruit salads, etc. 350 ( (Calculated as Ca); canned peas 350 (calculated as Ca); jam and jelly 200 (calculated as Ca); low concentrated milk, sweetened condensed milk, cream, 2g / kg alone, 3g / kg (anhydrous); milk powder, butter powder 5g / kg (anhydrous); pickles 250; general cheese is 200 for milk.
3 GB 14880-94: as a nutrition fortifier, the same as "01202,
Calcium chloride is irritating because it can dehydrate the wet skin. Solid anhydrous calcium chloride dissipates a large amount of heat when dissolved. If accidentally ingested, it can cause oral and esophageal burns. Ingestion of concentrated solutions or solids of calcium chloride can cause gastrointestinal irritation or ulcers [23]
