What is hydrogen chloride?

Hydrogen chloride, is a colorless non-combustible gas, has a very stimulating smell, the proportion is greater than air, humid air produces white fog, easily soluble in water, hydrochloric acid. It is highly corrosive and can react with a variety of metals to produce hydrogen, which can form explosive mixture with air and produce highly toxic hydrogen cyanide when encountered with cyanide.

Hydrogen chloride is a colorless and pungent gas. Concentrated hydrochloric acid is colorless liquid, put it in a bottle, after a while the bottle mouth will produce white mist (due to the strong volatility of hydrochloric acid, white mist is hydrogen chloride volatilized and combined with water vapor in the air to produce small droplets of hydrochloric acid), has a pungent sour taste. Industrial hydrochloric acid will appear slightly yellow due to the impurity trivalent iron salt. It is easily soluble in water, at 0℃, 1 volume of water can dissolve about 500 volume of hydrogen chloride. The aqueous solution of hydrogen chloride is acidic, called hydrochloric acid, which is a strong acid and is traditionally called hydrochloric acid. Mainly used for making dyes, spices, drugs, all kinds of chlorides and corrosion inhibitors. Hydrochloric acid is an aqueous solution of hydrogen chloride, which is colorless or slightly yellow liquid and volatile.

What harm does hydrogen chloride cause to human body?

Health hazards: Hydrogen chloride gas has a strong irritating effect on the eye and respiratory mucosa. 

Acute poisoning: headache, dizziness, nausea, eye pain, cough, blood in phlegm, hoarseness, difficulty breathing, chest tightness, chest pain, etc. Severe cases of pneumonia, pulmonary edema, atelectasis. Ulceration or opacity of the cornea can be seen. Direct skin contact can appear a large number of millet like red small papules and flushing pain and heat. 

Chronic effects: long-term high concentration exposure can cause chronic bronchitis, gastrointestinal dysfunction and dental erosion. 

Symptoms caused by the local action of hydrogen chloride include conjunctivitis, corneal necrosis, damage to the skin and mucosa, resulting in severe painful burns. After inhalation, it can cause rhinitis, nasal septum perforation, tooth erosion, laryngitis, bronchitis, pneumonia, headache and palpitations, and asphyxia. When swallowed, it will irritate the mouth, throat, esophagus and stomach, causing salivation, nausea, vomiting, intestinal perforation, chills and fever, restfulness, shock, nephritis. Long-term exposure to low concentrations of hydrogen chloride can dry and turn the skin earthy, and can also cause cough, headache, insomnia, dyspnea, palpitations, stomach pain and other conditions. The most obvious symptom of chronic poisoning is that the surface of the teeth becomes rough, especially the front teeth are spotted. 

Explosion hazard: hydrogen chloride is a non-flammable gas, but in contact with active metal powder, it will react to produce hydrogen and chloride. There is a danger of explosion and fire due to the production of hydrogen. Cylinders containing hydrogen chloride, in case of open fire or high temperature, the internal pressure increases, there is a risk of bursting.

What are the sources of pollution?

Hydrogen chloride can be synthesized directly from chlorine and hydrogen or made by passing chlorine and water vapor through burning coke. Hydrogen chloride is mainly used to prepare standard solutions to titrate alkaline substances; Adjust the ph of the solution; Hydrolyzed starch and protein, etc.; Preparation of chlorides, adhesives, pharmaceuticals and dyes; Organic synthesis catalyst, solvent, corrosive agent; Dyes, spices, drugs, various chlorides and corrosion inhibitors; Manufacture of barium chloride, ammonium chloride, etc., in laboratory, metallurgy, manufacturing dyes, leather tanning and dyeing, textile and related chemical production often appear.

How to prevent hydrogen chloride poisoning?

Provide adequate local exhaust and total ventilation. Strengthen safety education, strictly abide by the operation process, prevent accidents. Equipment should be sealed, frequent maintenance, put an end to running, braving, dripping, leakage phenomenon. When the concentration in the air exceeds the standard, wear a filter gas mask. Install online hydrogen chloride probe to monitor toxic gas leakage in real time. It is equipped with portable hydrogen chloride detector, which can be carried during operation to ensure personal safety. It is recommended to wear air breathing apparatus during emergency rescue or evacuation. After work, shower and change. Maintain good hygiene.

What are the emergency measures?

Leakage: Quickly evacuate people from the contaminated area to the safe area (escape to the high place, because the density of HCl is large), and isolate, strictly restrict access. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and anti-acid and alkali work clothes. Do not contact the leak directly. Cut off leakage sources as much as possible to prevent entering restricted Spaces such as sewers and flood drainage ditches. 

Small leakage: mix with sand, dry lime or soda ash. It can also be rinsed with plenty of water, diluted and put into the wastewater system. 

Massive leakage: build embankments or dig pits for reception; Pump to the tank or special collector, recycling or transport to the waste treatment site for disposal. 

Inhalation: quickly leave the site to fresh air. Keep your airways open. If breathing is difficult, give oxygen. If breathing stops, give artificial respiration immediately. Seek medical attention. Ingestion: Gargle with water, drink milk or egg white, and seek medical attention in time. 

Skin contact: Immediately remove contaminated clothing, rinse with plenty of running water for at least 15 minutes, and seek medical attention in time. 

Eye contact: Immediately lift eyelids, rinse thoroughly with plenty of running water or normal saline for at least 15 minutes, and seek medical attention in time.

ABOUT US

Founded in 2013, Zibo Dijia Special Gas Co., Ltd ,based on more than thirty years of research and production of hydrogen chloride gas, 

Dijia as the window to actively explore new markets and integration of special gas resources for domestic and foreign customers.

 Zibo Dijia has full range of gases, including Industrial gases,specialty gases,electronic gases, high purity gases, mixed gases, electric lighting gases, 

ultra-pure gases, laser gases, medical gases, calibration gases, a total of ten series of more than 100 varieties, with strong market competitiveness.