草酸也称为乙二酸和一种二羧酸，是一种天然存在于许多蔬菜和植物中的化合物。固态时无臭、无色，提纯后呈白色晶体状。下面氢氧化钾厂家为您讲讲草酸的一些常见问题。

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.

草酸对皮肤好吗？

Is oxalic acid good for skin?

草酸可引起皮肤炎症。如果被皮肤摄入晶体/溶液是有毒的。可能会发生草酸引起的罕见化学灼伤，并可能导致低钙血症。在没有橡胶手套的情况下在草酸溶液中工作的人手中，已经存在坏疽。

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.

醋有草酸吗？

Does vinegar contain oxalic acid?

当然，草酸是一种化学元素。从本质上讲，草酸是一种强酸：它比醋酸强约3,000倍，醋酸在普通醋中是酸的化学术语（通常以约5%的醋酸溶液销售）。

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).

为什么以草酸为主要标准？

Why is oxalic acid the main standard?

主要标准是可以以纯形式精确称量的任何材料，例如草酸，以便可以通过测量的重量和已知的摩尔质量可靠地估计存在的摩尔数。主要标准不一定是酸碱滴定中使用的标准溶液。

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?

盐酸的作用类似于硫酸，可替代草酸。在将钢或其他金属进一步加工成更经济可用的形式之前，盐酸可以去除金属中的铁锈和氧化铁（这种方法也称为酸洗）。

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?

为中和草酸（和盐酸）酸的症状，浸泡后，用流水搓洗一分钟或更长时间；干燥前浸入水溶液和小苏打中。要取得成功，这可能需要24小时或更长时间。

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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