p.a., ACS Reagent, Reag.

It is used as wood darkening in the wood tannins that produced deep brown color on wood. The acute dermal LD50 of sodium dichromate was found to be >2000 mg/kg bw in a guideline-compliant study (Cuthbert & D'Arcy-Burt, 1983). It is used in leather industry for chrome tanning by acting as a precursor for potassium chrome alum. Chromium trioxide is listed on Annex I of Directive 67/548/EEC as (R26) 'Very toxic by inhalation'; this is consistent with the proprietary study and no change is proposed. It has a very beautiful bright red-orange colour appearance and is found in an ionic solid crystalline state.

It is an ionic compound with two potassium ions (K), in which two hexavalent chromium atoms (with oxidation state +6) are each attached to three oxygen atoms as well as a bridging oxygen atom.It is easily soluble in hot water but moderately soluble in cold water. Potassium dichromate Puriss. Please upgrade your Internet Explorer to a newer version.This website uses cookies to ensure you get the best experience on our websites. Potassium dichromate standard solutions in sulfuric acid (0.01N) 1 Product Result | Match Criteria: Product Name 1.08158 ; test set for calibrating the absorbance of spectrophotometers; Supelco pricing.

In comparison to the other Cr (VI) compounds, chromium trioxide was found to be of relatively high acute dermal toxicity (LD50 = 57 mg/kg bw). In chemistry, an oxidizing agent is a type of substance which has the ability to oxidize other substances. The reaction is used to detect chloride ions in a qualitative analysis.Potassium dichromate has widespread industrial use. Read-across between chromium trioxide and the other substances in this group for acuet dermal toxicity is therefore inappropriate.

Potassium dichromate. It is effective treatment for mahogany.Potassium dichromate can cause chronic diseases like chromium dermatitis in hands and forearms.The toxicity of potassium dichromate can cause harm to animals such as rabbits, rodents etc.It is toxic to aquatic organisms too, and poses a big threat to the environment. - … Chromium trioxide is listed on Annex I of Directive 67/548/EEC as (R25) 'Toxic in contact with skin'; this is consistent with the proprietary study and no change to the classification is proposed. Sodium dichromate is listed on Annex I of Directive 67/548/EEC as (R26) 'Very toxic by inhalation'; this is consistent with the proprietary study and no change to this classification is proposed based on the results of this study and the results of a proprietary study performed with potassium dichromate (read-across). Exposure to potassium dichromate has a cumulative effect, so any repeated exposure poses adverse health effects. It is a non-hygroscopic reagent and used in “wet tests” in analytical chemistry.It is known as Schwerter’s solution when dissolved in 35 percent nitric acid, and used in test to detect the presence of different metals in determining silver purity. The acute oral toxicity of chromium trioxide is slightly higher than that of other water-soluble hexavalent chromium compounds, possibly as a consequence of more severe local corrosive effects due to the low pH of this substance. The results of proprietary acute oral toxicity studies (Loser, 1987; Shults, 1987) are consistent with the results of other studies available in the literature (EU RAR, 2005) and report the lowest acute oral LD50 values (of 52 and 80 mg/kg bw/d respectively) for chromium trioxide.

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