The present invention specifically relates to novel salt and crystalline form of haloacetic acid and its process of preparation. The invention more particularly relates to novel crystalline form dichloroacetate tromethamine salt and its process of preparation. The present invention more specifically relates to the dichloroacetate tromethamine salt, its process and its use for the treatment of various diseases and/or disorders.

The present invention specifically relates to novel salt and crystalline form of haloacetic acid and its process of preparation. The invention more particularly relates to novel crystalline form dichloroacetate tromethamine salt and its process of preparation. The present invention more specifically relates to the dichloroacetate tromethamine salt, its process and its use for the treatment of various diseases and/or disorders.

The invention pertains to a method for recovering HCl from a HCl containing gas stream wherein a HCl containing gas stream with a temperature of 20 to 25 C. is provided to an adiabatic absorption unit where it is contacted with water as an absorbent, resulting in the formation of a top gas stream and a aqueous HCl product solution, wherein the temperature of the top gas stream is at least 70 C. and wherein the aqueous HCl product solution has a HCl concentration in the range of 5-20 wt. %. It is preferred for the HCl-containing gas stream to be derived from a hydrogenation step wherein a feed comprising monochloroacetic acid (MCA) and dichloroacetic acid (DCA) is reacted with hydrogen to form a HCl-containing gas stream and a product stream comprising MCA and a reduced amount of DCA. The HCl product solution is preferably diluted to a concentration of 1-8 wt. %, and the diluted solution is used as absorbent in a second absorption step, wherein HCl is absorbed from a further HCl-containing gas stream to form a second aqueous HCl solution. The further HCl-containing gas stream is preferably derived from a chlorination step wherein acetic acid is reacted with chlorine, resulting in the formation of the further HCl-containing gas stream and a feed comprising monochloroacetic acid (MCA) and dichloroacetic acid (DCA).

The invention pertains to a method for recovering HCl from a HCl containing gas stream wherein a HCl containing gas stream with a temperature of 20 to 25 C. is provided to an adiabatic absorption unit where it is contacted with water as an absorbent, resulting in the formation of a top gas stream and a aqueous HCl product solution, wherein the temperature of the top gas stream is at least 70 C. and wherein the aqueous HCl product solution has a HCl concentration in the range of 5-20 wt. %. It is preferred for the HCl-containing gas stream to be derived from a hydrogenation step wherein a feed comprising monochloroacetic acid (MCA) and dichloroacetic acid (DCA) is reacted with hydrogen to form a HCl-containing gas stream and a product stream comprising MCA and a reduced amount of DCA. The HCl product solution is preferably diluted to a concentration of 1-8 wt. %, and the diluted solution is used as absorbent in a second absorption step, wherein HCl is absorbed from a further HCl-containing gas stream to form a second aqueous HCl solution. The further HCl-containing gas stream is preferably derived from a chlorination step wherein acetic acid is reacted with chlorine, resulting in the formation of the further HCl-containing gas stream and a feed comprising monochloroacetic acid (MCA) and dichloroacetic acid (DCA).

The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.

The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.

The present disclosure provides new salts of 5-aminolevulinic acid (5-ALA) and new salts of 5-ALA esters, their preparation, formulation and use as photosensitizing agents in photodynamic therapy, diagnosis and cosmetic cares.

The present disclosure provides new salts of 5-aminolevulinic acid (5-ALA) and new salts of 5-ALA esters, their preparation, formulation and use as photosensitizing agents in photodynamic therapy, diagnosis and cosmetic cares.

The present invention specifically relates to novel salt and crystalline form of haloacetic acid and its process of preparation. The invention more particularly relates to novel crystalline form dichloroacetate tromethamine salt and its process of preparation. The present invention more specifically relates to the dichloroacetate tromethamine salt, its process and its use for the treatment of various diseases and/or disorders.

The present invention specifically relates to novel salt and crystalline form of haloacetic acid and its process of preparation. The invention more particularly relates to novel crystalline form dichloroacetate tromethamine salt and its process of preparation. The present invention more specifically relates to the dichloroacetate tromethamine salt, its process and its use for the treatment of various diseases and/or disorders.