I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is an alloy of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

I am curious as to which specific chemical reactions and products occur during the process of corrosion of stainless steel by bleach. Stainless steel is a composite of Fe, Cr, and sometimes other metals such as Ni, and the outer layer of this composite is protected by a passivation layer of Cr2O3. If sodium hypochlorite is introduced, does it indiscriminately oxidize both the Fe and Cr, or is one kinetically favored over the other?

My understanding is that hexavalent chromium is a strong oxidant. If that is the case, why is hexavalent chromium pollution persistent in the environment? Wouldn't it quickly become reduced to the harmless trivalent form?

My understanding is that hexavalent chromium is a strong oxidant. If that is the case, why is hexavalent chromium pollution persistent in the environment? Wouldn't it quickly become reduced to the harmless trivalent form?

My understanding is that hexavalent chromium is a strong oxidant. If that is the case, why is hexavalent chromium pollution persistent in the environment? Wouldn't it quickly become reduced to the harmless trivalent form?

I have been applying a 2-3% bleach spray regularly to a stainless steel refrigerator door for disinfection every 1-2 days for the last 2-3 months and have noticed that there are areas of corrosion forming on the refrigerator door (I was not aware that you are not recommended to apply bleach to stainless steel, so please forgive my ignorance). I recently also noticed there is a powder forming below the refrigerator door from the bleach spray runoff, and that the powder has a slight yellowish tint. I just learned that stainless steel contains chromium, and that while the chromium oxide in stainless steel contains trivalent chromium, I am wondering whether enough could have been oxidized such that a significant amount of hexavalent chromium could have been produced (which can be carcinogenic and which can be yellow, such as in sodium chromate). Theoretically, in a situation like this, how likely is it that there is a harmful amount of hexavalent chromium produced from multiple dilute bleach applications to stainless steel?

I have been applying a 2-3% bleach spray regularly to a stainless steel refrigerator door for disinfection every 1-2 days for the last 2-3 months and have noticed that there are areas of corrosion forming on the refrigerator door (I was not aware that you are not recommended to apply bleach to stainless steel, so please forgive my ignorance). I recently also noticed there is a powder forming below the refrigerator door from the bleach spray runoff, and that the powder has a slight yellowish tint. I just learned that stainless steel contains chromium, and that while the chromium oxide in stainless steel contains trivalent chromium, I am wondering whether enough could have been oxidized such that a significant amount of hexavalent chromium could have been produced (which can be carcinogenic and which can be yellow, such as in sodium chromate).

I have been applying a 2-3% bleach spray regularly to a stainless steel refrigerator door for disinfection every 1-2 days for the last 2-3 months and have noticed that there are areas of corrosion forming on the refrigerator door (I was not aware that you are not recommended to apply bleach to stainless steel, so please forgive my ignorance). I recently also noticed there is a powder forming below the refrigerator door from the bleach spray runoff, and that the powder has a slight yellowish tint. I just learned that stainless steel contains chromium, and that while the chromium oxide in stainless steel contains trivalent chromium, I am wondering whether enough could have been oxidized such that a significant amount of hexavalent chromium could have been produced (which can be carcinogenic and which can be yellow, such as in sodium chromate). Theoretically, in a situation like this, how likely is it that there is a harmful amount of hexavalent chromium produced from multiple dilute bleach applications to stainless steel?

I have been applying a 2-3% bleach spray regularly to a stainless steel refrigerator door for disinfection every 1-2 days for the last 2-3 months and have noticed that there are areas of corrosion forming on the refrigerator door (I was not aware that you are not recommended to apply bleach to stainless steel, so please forgive my ignorance). I recently also noticed there is a powder forming below the refrigerator door from the bleach spray runoff, and that the powder has a slight yellowish tint. I just learned that stainless steel contains chromium, and that while the chromium oxide in stainless steel contains trivalent chromium, I am wondering whether enough could have been oxidized such that a significant amount of hexavalent chromium could have been produced (which can be carcinogenic and which can be yellow, such as in sodium chromate). Theoretically, in a situation like this, how likely is it that there is a harmful amount of hexavalent chromium produced from multiple dilute bleach applications to stainless steel?

I live in a large apartment complex, and recently a pest control technician came for a pest inspection service. I noticed that they came in wearing a pair of reusable black leather gloves and touched some items in my apartment while wearing the gloves. They also used those gloves to carry a satchel bag which appeared to have cans of pesticides (maybe some kind of bug spray?), but they did not apply any of those pesticides during the visit.

I am unfamiliar with pest control service practices and do not know if the technician had worn those gloves when applying pesticides elsewhere, so I am wondering - is this safe (any concerns for potentially getting pesticides on my belongings), and is this a common practice?

I've recently come across a number of articles which suggest that car tires (and items made from recycled car tires, such as crumb rubber) may present a chemical hazard at various points throughout the tire lifespan:

• Chemicals found in motor vehicle tires: https://dtsc.ca.gov/scp/chemicals-in-motor-vehicle-tires/
• Car tire emissions and microplastic pollution: https://e360.yale.edu/features/tire-pollution-toxic-chemicals
• Chemicals from car tires and crumb rubber: https://phys.org/news/2026-01-rubber-decays-potentially-dangerous-chemical.html
• Chemicals from crumb rubber made from recycled tires: https://www.nbcnews.com/storyline/artificial-turf-debate/rubber-mulch-safe-surface-your-childs-playground-n258586

Given that rubber is a polymer, my understanding is that theoretically, chemicals added to the car tire would probably be bound to the rubber matrix. However, I am unclear whether these would be covalently bound or not. I have the following questions:

• How securely are the chemicals in car tires bound to the rubber matrix?
• From a day-to-day perspective, if you were to touch an intact car tire, would the amount of these chemicals you might get on your skin or clothing or other items pose a health or safety concern?

I've recently come across a number of articles which suggest that car tires (and items made from recycled car tires, such as crumb rubber) may present a chemical hazard at various points throughout the tire lifespan:

• Chemicals found in motor vehicle tires: https://dtsc.ca.gov/scp/chemicals-in-motor-vehicle-tires/
• Car tire emissions and microplastic pollution: https://e360.yale.edu/features/tire-pollution-toxic-chemicals
• Chemicals from car tires and crumb rubber: https://phys.org/news/2026-01-rubber-decays-potentially-dangerous-chemical.html
• Chemicals from crumb rubber made from recycled tires: https://www.nbcnews.com/storyline/artificial-turf-debate/rubber-mulch-safe-surface-your-childs-playground-n258586

Given that rubber is a polymer, my understanding is that theoretically, chemicals added to the car tire would probably be bound to the rubber matrix. However, I am unclear whether these would be covalently bound or not. I have the following questions:

• How securely are the chemicals in car tires bound to the rubber matrix?
• From a day-to-day perspective, if you were to touch an intact car tire, would the amount of these chemicals you might get on your skin or clothing or other items pose a health or safety concern?