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Unveiling Barium Chromate: Properties Production and Hazards

Barium Chromate: Understanding its Properties and Production

When it comes to the chemical world, Barium Chromate is a familiar name. Many people recognize it for its oxidizing properties, as a compound of both Chromium and Barium ions, or as the source of green flames when exposed to fire.

However, what is Barium Chromate, and how is it produced? In this article, we will dive into the specifics of this chemical compound, breaking it down through its properties and production process.

Barium Chromate Description

Before delving into the specifics of Barium Chromate’s properties, it is essential to understand the compound itself. Barium Chromate consists of two ions, Barium and Chromium, produced by a precipitation reaction between Barium chloride and Sodium Chromate.

Its chemical formula is BaCrO4 and its CAS number is 10294-40-3. Additionally, BaCrO4 has an RTECS (Registry of Toxic Effects of Chemical Substances) number of CQ7875000, indicating it may have potential health risks under certain circumstances.

In industrial applications, Barium Chromate is often used as an oxidizing agent, as it can readily provide oxygen, which leads to the acceleration of chemical reactions. Moreover, Barium Chromate is a common component of pyrotechnics and fireworks for its ability to produce vibrant green flames.


To be able to fully comprehend the different properties and dangers that Barium Chromate may potentially exhibit, identification of the compound is crucial. In terms of its identification, BaCrO4 has a unique CAS number of 10294-40-3.

Similarly, its registration number in the RTECS database is CQ7875000. These identification numbers help keep track of the chemical compound’s properties, allowing for accurate data and documentation.


Another crucial aspect of understanding Barium Chromate is its production process. Barium Chromate is produced through a precipitation reaction between Barium Chloride and Sodium Chromate.

When the two compounds are mixed together, Barium Chromate precipitates out of the mixture. The following is the basic equation for the reaction:

BaCl2(aq) + Na2CrO4(aq) BaCrO4(s) + 2NaCl(aq)

In this reaction, Barium Chloride reacts with Sodium Chromate, resulting in the production of Barium Chromate, Sodium Chloride, and water.


Barium Chromate is a critical compound with various properties and uses. Its oxidizing properties, role in pyrotechnics, and production process set it apart as a unique compound.

While BaCrO4’s identification number helps to keep its production and common uses organized, its chemical formula is at the core of its properties. Whether it’s the vibrant green flames or its reaction with other chemicals, Barium Chromate deserves to be understood with respect to its properties and production.

Molecular Formula and Properties of Barium Chromate

Barium Chromate, a bright yellow crystalline powder, is a unique compound consisting of two metal ions, Barium and Chromium. Its molecular formula is BaCrO4, which explains why it is commonly referred to as Barium Chromate or Barium Yellow.

BaCrO4 is an inorganic compound with a relative molar mass of 253.32 g/mol.

Physical Properties of Barium Chromate

The physical properties of Barium Chromate are key to understanding how it reacts or behaves in different situations. Barium Chromate usually appears as a bright yellow, odorless, and tasteless powder.

It is soluble in hot water but virtually insoluble in cold water. In addition, Barium Chromate has a melting point of 1070C (1960F), and a density of 4.50 g/cm3.

Barium Chromate is non-combustible and non-flammable, but its use as an oxidizing agent or in pyrotechnic compositions can result in combustion. BaCrO4 is also a highly toxic and potentially carcinogenic material when inhaled.

Safety guidelines should be followed when working with this compound.

Uses of Barium Chromate

Barium Chromate has various industrial applications that rely on its unique properties. These applications range from its use in pyrotechnics to its use as a corrosion inhibitor in metal primers.

The following outlines the primary uses of Barium Chromate:

  • Oxidizer – As an oxidizing agent, Barium Chromate accelerates a chemical reaction by providing oxygen to the reaction system. Its oxidizing properties make BaCrO4 an essential component of different explosives.
  • Burn rate modifier – Barium Chromate is used as a burn rate modifier in pyrotechnic compositions to control the speed at which the mixture burns, producing various effects such as color and sound.
  • Pigments – BaCrO4 is also used for industrial pigment production, where its bright yellow color offers a unique contrast when mixed with other colors. Barium Chromate is eco-friendly compared to other pigments, as it is less harmful to the environment due to its insolubility in water.
  • Corrosion inhibitor – Barium Chromate is a well-known corrosion inhibitor in metal primers. The compound creates a coating on steel surfaces, protecting the surface from corrosion and degradation from exposure to water and other corrosive materials.
  • Matches – Barium Chromate possesses ignition control properties, making it an essential component of modern match production. The compound is used as an ignition agent together with potassium chlorate, powdered glass, and red phosphorus.
  • Ignition control devices – In rocket science and missile technology, Barium Chromate finds use as an ignition control device. It is used in the rocket motor’s ignition system, ensuring that the rocket ignites at the right moment.
  • Explosives – Barium Chromate is also used in the production of explosives, in part due to its oxidizing properties. It is used together with other compounds, such as ammonium perchlorate, to create a strong and potent explosive mix.


Barium Chromate is a well-known compound used in different industries for a variety of purposes. The physical properties, which include its solubility, molar mass, melting point, and density, are critical to understanding the compound’s behavior and its correct manipulation in different industrial uses.

The compound’s properties are key to its industrial uses, such as serving as an oxidant, burn rate modifier, and aid in the production of pigments, matches, and explosives. Despite its usefulness, Barium Chromate is highly toxic and hazardous, making necessary safety guidelines essential when handling this compound.

Reactions of Barium Chromate

Solubility and Reactions with Acids

Barium Chromate is generally insoluble in water, but its solubility can be increased by the presence of an acidic solution or by the addition of hydrogen ions (H+). This solubility varies based on the solubility product constant (Ksp) of BaCrO4, which is a measure of its solubility in water.

The solubility product of BaCrO4 is 2.1 x 10^-10 at 25°C, indicating that it is very slightly soluble in water. In the presence of an acid, the compound can form Barium ions (Ba2+) and Dichromate ions (Cr2O72-), as shown in the following equation:

BaCrO4 + 2H+ Ba2+ + Cr2O72- + H2O

These Barium ions (Ba2+) can also react with other compounds to form insoluble Barium salts that can precipitate out of a solution.

However, care should be taken when using Barium Chromate in the presence of acidic solutions, as they can produce hazardous gas and increase the risk of exposure to toxic by-products.

Material Safety Data Sheet for Barium Chromate

Toxicology and Health Effects

Barium Chromate is a highly toxic compound that presents several potential health hazards to those exposed to it. The compound can be inhaled, ingested, or come into contact with the skin or eyes, resulting in a range of negative health effects.

Inhalation of Barium Chromate can cause respiratory distress, chest pain, coughing, and shortness of breath. Ingestion of BaCrO4 can lead to abdominal pain, vomiting, diarrhea, and nausea.

Skin contact with Barium Chromate can cause skin irritation, rashes, and burns, while contact with the eyes can result in irritation, redness, and corneal damage. Overall, exposure to Barium Chromate can result in breathing difficulties, vascular collapse, and even death in severe cases.

Hence, handling Barium Chromate should be done with proper safety equipment and guidelines and done only in designated areas.

First Aid Measures

If exposure to Barium Chromate occurs, specific first-aid measures should be taken to minimize potential negative health effects. Below are the recommended first-aid measures depending on the type of exposure:

  • Inhalation: Immediately move the victim to an area with fresh air and ensure they are breathing correctly. If breathing difficulties persist, seek medical attention immediately.
  • Ingestion: Call for medical attention and induce vomiting if it is determined to be safe.
  • Skin contact: Remove any contaminated clothing and immediately wash the affected skin area with soap and water. Seek medical attention if irritation persists.
  • Eye contact: Rinse the affected eye(s) with water immediately for at least 15 minutes. Seek medical attention as soon as possible.


Barium Chromate is a highly toxic compound with potential health hazards, making safety guidelines and information key when handling it. Its solubility with an acidic solution and interactions with other compounds can produce hazardous gases and cause negative health effects during exposure.

It is critical that safety equipment and guidelines be used when handling Barium Chromate, and first aid measures should be applied as recommended when the need arises.

Personal Safety Measures, Fire Fighting Measures, and Storage Instructions of Barium Chromate

Personal Safety Measures

Barium Chromate is a hazardous and toxic substance that requires specific personal safety measures when handling. Workers who may come into contact with the compound should wear protective clothing, such as lab coats, safety goggles, and protective gloves.

Additionally, NIOSH approved dust respirators should be used when handling BaCrO4, particularly during handling and mixing, to reduce exposure to hazardous dust particles. When using Barium Chromate, the work area should be well-ventilated.

In case of accidental exposure, it is recommended to follow the first aid measures mentioned above. The use of proper handling equipment and guidelines are essential when planning to work with Barium Chromate.

Fire Fighting Measures

Barium Chromate does not pose a high risk of combustion or fire when stored or transported, but it can be combustible when handled improperly. If a fire caused by Barium Chromate breaks out, it should be extinguished with a dry chemical or CO2 fire extinguisher.

It is essential to be cautious when extinguishing a Barium Chromate fire, as putting out the flame with water can lead to the liberation of highly toxic gases. Firefighters and other responders should wear protective clothing and avoid inhaling the fumes resulting from a Barium Chromate combustion.

Storage Instructions

Barium Chromate should be stored in tightly sealed containers or air-tight bags in a cool, dry, and well-ventilated place. The storage area should be labeled with a clear warning sign indicating the hazardous nature of the material.

Barium Chromate should not be kept in areas where other incompatible substances, such as acids, are present, as this can lead to the liberation of toxic by-products.

Barium Chromate Price and Availability

Supply and Demand of Barium Chromate

When it comes to the supply of Barium Chromate, many companies worldwide exist that produce and distribute the compound. These companies often cater to industrial applications in different sectors, such as pyrotechnics, aerospace, and biotechnology, among others.

Online buyers can acquire Barium Chromate quickly and efficiently from online chemical suppliers. The availability of the compound may vary, depending on the location and demand in specific areas.

Therefore, buyers should be mindful of market trends and global supply to obtain Barium Chromate at a reasonable price.

Reasonable Price

The price of Barium Chromate varies depending on the supplier, quantity, quality, and grade of the compound. Some chemical suppliers offer discounts for bulk orders, making it essential to conduct thorough research on the available suppliers’ pricing and offers.

Overall, the price of Barium Chromate is reasonable, and it varies depending on its intended use and application. Buyers should assess the quality and quantity of the compound for the best price possible.


Barium Chromate is a toxic and highly hazardous compound that requires careful handling, proper storage, and specific safety measures to ensure safe use. Firefighters and responders should have the proper gear and clothing when combating fires caused by Barium Chromate.

Buyers can purchase Barium Chromate from chemical suppliers and online vendors at reasonable prices by considering global supply trends and bulk order discounts. As a responsible buyer, it’s crucial to assess the available options thoroughly and make a well-informed decision.

In conclusion, Barium Chromate is a highly toxic compound with various industrial uses and inherent risks. Understanding its molecular formula, properties, and production process is crucial for safe handling.

Personal safety measures, fire fighting precautions, and proper storage instructions are essential to minimize the associated hazards. Buyers should consider the supply and demand dynamics to obtain Barium Chromate at a reasonable price.

Ultimately, the importance of following safety guidelines cannot be overstated when working with this hazardous compound.


  1. What are the personal safety measures required when handling Barium Chromate? Personal safety measures include wearing lab coats, safety goggles, protective gloves, and NIOSH approved dust respirators.
  2. What should be done in case of fire caused by Barium Chromate? Barium Chromate fires should be extinguished with dry chemical or CO2 fire extinguishers while wearing protective clothing.
  3. How should Barium Chromate be stored? Barium Chromate should be stored in tightly sealed containers or air-tight bags in a cool, dry, and well-ventilated place, away from incompatible substances.
  4. Can Barium Chromate be purchased online? Yes, Barium Chromate is available for purchase through online chemical suppliers.
  5. What precautions should be taken when working with Barium Chromate? It is essential to follow safety guidelines, wear necessary protective equipment, and handle the compound in a well-ventilated area to minimize exposure and risks.

Remember, proper handling and adherence to safety protocols are vital when working with Barium Chromate to ensure the well-being of both individuals and the environment.

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