US 2018/0235218 Al  2  Aug. 23, 2018  [0028]  According to the invention, the object is further  achieved by a disinfectant concentrate for the preparation of  the disinfectant according to the invention for the disinfec› tion of inanimate surfaces, containing  [0056]  Preferably, the disinfectant according to the inven› tion contains as antimicrobial active ingredient the following  combinations of organic acids, wherein no further organic  acids are present:  CombinationA: propionic acid, lactic acid, sodium benzoate  Combination B: propionic acid, lactic acid, acetic acid  Combination C: propionic acid, acetic acid, sodium benzo› ate  Combination D: acetic acid, lactic acid, sodium benzoate  [0023]  In one embodiment, the disinfectant according to  the invention consists of  wherein the components add up to 100% by weight.  wherein the components add up to 100% by weight.  [0022]  The disinfectant according to the invention is pref› erably present as a ready-to-use, aqueous solution for dis› infection (application solution). The application solution is  prepared by dilution of a disinfectant concentrate according  to the invention with water. In this case, the disinfectant  according to the invention contains preferably 0.1 to 10% by  weight, particularly preferably 0.5 to 8.0% by weight, fur› ther particularly preferably 2.0 to 6.0% by weight, of the  concentrate and water.  [0051]  In a further embodiment, the disinfectant concen› trate according to the invention consists of  wherein the components add up to 100% by weight.  Lactic acid 0.05-3% by weight, preferably 0.5-1.5% by  weight  [0021]  In the disinfectant according to the invention, the  individual components, if present, are preferably present in  the following amounts.  Tartaric acid 0.1-2% by weight, 0.5-1% by weight  Acetic acid 0.1-5% by weight, 0.5-3% by weight  Propionic acid 0.1-5% by weight, 0.5-3% by weight  Sodium benzoate 0.1-2% by weight, 0.1-1% by weight  Sodium acetate 0.1-5% by weight, 0.2-1% by weight  Propylene glycol 0.1-3% by weight, 0.2-1% by weight  Hexyl carbitol 0.1-3% by weight, 0.2-1 % by weight  [0043]  In a further preferred embodiment, the disinfectant  concentrate according to the invention consists of  [0033]  In one embodiment, the disinfectant concentrate  according to the invention consists of  [0020]  Instead of the free acid, the salt of an organic acid  can also be added to the disinfectant composition. This has  the advantage that the pH can be regulated without further  pH regulators. Moreover, there is the option of adding a  strong acid, for example hydrochloric acid or sulfuric acid,  to produce the free acid from a salt.  [0019]  Unless specified otherwise, all the concentrations  specified for the organic acids are based in each case on  100% acid. Preferably, according to the invention, the prepa› ration of the disinfectant compositions uses commercially  available 90% lactic acid, 99% propionic acid, 99% (  + )› tartaric acid, 99% sodium benzoate and 100% acetic acid.  [0018]  Preferably, the disinfectant according to the inven› tion does not contain organic acids apart from acetic acid,  lactic acid, propionic acid, tartaric acid, benzoic acid or  mixtures thereof. It is also possible to use the sodium and  potassium salts of the acids in order to buffer the pH of the  solution. Preference is given here to sodium acetate and  sodium benzoate. Particularly preferably, the disinfectant  according to the invention contains a combination selected  from acetic acid, propionic acid, lactic acid, tartaric acid and  sodium benzoate and, more particularly, no sorbic acid and  no C6-C12 fatty acids are present.  The frequency and the extent of the disinfection of inani› mate surfaces are dependent on the risk potential. The  Robert Koch Institute (RKI) makes a distinction between  routine, daily disinfection on a hospital bed and specific  surface disinfection in particular situations.  [0032]  In the disinfectant concentrate according to the  invention, the amount of each individual organic acid is  preferably not more than 50% by weight and the total  amount of acids is not more than 85% by weight.  wherein the specified amounts are based in each case on the  total amount of the concentrate.  [0029]  0.1-85% by weight of at least three organic acids  or the salts thereof selected from the group consisting  of acetic acid, propionic acid, tartaric acid, benzoic acid  and lactic acid,  [0030]  a solvent, preferably water, and  [0031]  optionally solubilizers selected from glycols,  glycol ethers or a mixture thereof,  [0027]  water  [0026]  auxiliaries, for example surfactants, solubilizers  and  [0025]  0.1-10% by weight of sodium benzoate,  [0024]  0.1-10% by weight of at least two organic acids  selected from acetic acid, propionic acid, lactic acid  and tartaric acid or a combination of these,  [0055]  water,  [0054]  auxiliaries, such as, for example, solubilizers  and pH regulators  [0053]  6-13% by weight of sodium benzoate  [0052]  15-45% by weight of at least two organic acids  selected from acetic acid, propionic acid, lactic acid or  a combination of these,  [0050]  water,  [0049]  0.1-15% by weight of sodium benzoate,  -2-20% by weight of solubilizer selected from  hexyl carbitol, propylene glycol, methyl carbitol,  butyl carbitol, monoethylene glycol or a combination  of these and  [0048]  0.1-30% by weight of lactic acid and  [0047]  0.1-6% by weight of tartaric acid,  [0046]  0.1-50% by weight ofpropionic acid,  [0045]  0.1-50% by weight of acetic acid,  [0044]  21-85% by weight of at least three organic acids  selected from  [0042]  optionally auxiliaries ( disinfection additives)  selected from: pH regulators, surfactants, solubilizers,  corrosion inhibitors, dyes, fragrances, complexing  agents, wherein the components add up to 100% by  weight and the total amount of acids is at least 21 % by  weight.  [0041]  optionally solvent and  [0040]  0-15% by weight of sodium acetate  [0039]  0-6% by weight of tartaric acid,  [0038]  0-25% by weight of sodium benzoate,  [0037]  wherein the sum of acetic acid and propionic  acid is between 15% by weight and 60% by weight,  [0036]  0.1-50% by weight of propionic acid,  [0035]  0.1-50% by weight of acetic acid,  [0034]  0.1-15% lactic acid, 