草酸也稱為乙二酸和一種二羧酸，是一種天然存在于許多蔬菜和植物中的化合物。固態時無臭、無色，提純后呈白色晶體狀。下面氫氧化鉀廠家為您講講草酸的一些常見問題。

Oxalic acid, also known as oxalic acid and a dicarboxylic acid, is a naturally occurring compound in many vegetables and plants. In solid state, it is odorless and colorless, and white crystal after purification. The potassium hydroxide manufacturer will tell you some common problems of oxalic acid.

草酸對皮膚好嗎？

Is oxalic acid good for skin?

草酸可引起皮膚炎癥。如果被皮膚攝入晶體/溶液是有毒的。可能會發生草酸引起的罕見化學灼傷，并可能導致低鈣血癥。在沒有橡膠手套的情況下在草酸溶液中工作的人手中，已經存在壞疽。

Oxalic acid can cause skin inflammation. The crystal/solution is toxic if ingested by the skin. Rare chemical burns caused by oxalic acid may occur and may lead to hypocalcemia. Gangrene already exists in the hands of people working in oxalic acid solution without rubber gloves.

醋有草酸嗎？

Does vinegar contain oxalic acid?

當然，草酸是一種化學元素。從本質上講，草酸是一種強酸：它比醋酸強約3,000倍，醋酸在普通醋中是酸的化學術語（通常以約5%的醋酸溶液銷售）。

Of course, oxalic acid is a chemical element. In essence, oxalic acid is a strong acid: it is about 3000 times stronger than acetic acid. Acetic acid is the chemical term of acid in common vinegar (usually sold with about 5% acetic acid solution).

為什么以草酸為主要標準？

Why is oxalic acid the main standard?

主要標準是可以以純形式精確稱量的任何材料，例如草酸，以便可以通過測量的重量和已知的摩爾質量可靠地估計存在的摩爾數。主要標準不一定是酸堿滴定中使用的標準溶液。

The main standard is any material that can be accurately weighed in pure form, such as oxalic acid, so that the number of moles present can be reliably estimated by measured weight and known molar mass. The main standard is not necessarily the standard solution used in acid-base titration.

可以用什么代替草酸？

What can replace oxalic acid?

鹽酸的作用類似于硫酸，可替代草酸。在將鋼或其他金屬進一步加工成更經濟可用的形式之前，鹽酸可以去除金屬中的鐵銹和氧化鐵（這種方法也稱為酸洗）。

The action of hydrochloric acid is similar to that of sulfuric acid, which can replace oxalic acid. Before further processing steel or other metals into a more economical and usable form, hydrochloric acid can remove rust and iron oxide in the metal (this method is also called pickling).

如何中和草酸？

How to neutralize oxalic acid?

為中和草酸（和鹽酸）酸的癥狀，浸泡后，用流水搓洗一分鐘或更長時間；干燥前浸入水溶液和小蘇打中。要取得成功，這可能需要24小時或更長時間。

In order to neutralize the symptoms of oxalic acid (and hydrochloric acid), after soaking, scrub with running water for one minute or more; Immerse in water solution and baking soda before drying. This may take 24 hours or more to succeed.

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