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产品介绍product description

碳酸氢钠(NaHCO)(Sodium Bicarbonate),俗称小苏打。白色细小晶体,在水中的溶解度小于碳酸钠。它也是一种工业用化学品,低毒。固体50℃以上开始逐渐分解生成碳酸钠、二氧化碳和水,440℃时完全分解。碳酸氢钠是强碱与弱酸中和后生成的酸式盐,溶于水时呈现弱碱性。此特性可使其作为食品制作过程中的膨松剂。碳酸氢钠在作用后会残留碳酸钠,使用过多会使成品有碱味。

Sodium bicarbonate (NaHCO₃), commonly known as baking soda. White fine crystals, less soluble in water than sodium carbonate. It is also an industrial chemical with low toxicity. The solid begins to decompose to produce sodium carbonate, carbon dioxide and water above 50 ° C, and completely decomposes at 440 ° C. Sodium bicarbonate is an acidic salt formed by the neutralization of a strong base with a weak acid, and appears weakly alkaline when dissolved in water. This property makes it suitable as a leavening agent in food production. After the action of sodium bicarbonate, sodium carbonate will remain, and excessive use will make the finished product have an alkaline taste.

产品特性Product Features

Chinese alias

碳酸氢钠;重碳酸钠;小苏打;焙碱;重曹

English name

Sodium hydrogen carbonateSodium hydrogen   carbonate;Sodium bicarbonate

Chemical formula

NaHCO3

Molecular weight

84.01

CAS NO.

144-55-8

UNNO.

NA

Dangerous nature

Non-hazardous chemicals

碳酸氢钠为白色晶体,或不透明单斜晶系细微结晶。比重2.15。无臭、味咸,可溶于水,微溶于乙醇。25℃时溶于10份水,约18℃时溶于12份水。其水溶液因水解而呈微碱性,常温中性质稳定,受热易分解,在50℃以上逐渐分解,在440℃时完全失去二氧化碳,在干燥空气中无变化,在潮湿空气中缓慢分解。

Sodium bicarbonate is white crystal or fine crystal of opaque monoclinic system. The specific gravity is 2.15. Odorless, salty, soluble in water, slightly soluble in ethanol. It is soluble in 10 parts of water at 25 ° C and 12 parts of water at about 18 ° C. Its aqueous solution is slightly alkaline due to hydrolysis. It is stable at room temperature and easily decomposes when heated. It gradually decomposes above 50 ° C, completely loses carbon dioxide at 440 ° C, has no change in dry air, and slowly decomposes in humid air.

产品用途 Product Usage

碳酸氢钠可直接作为制药工业的原料,用于治疗胃酸过多。还可用于电影制片、鞣革、选矿、冶炼、金属热处理,以及用于纤维、橡胶工业等。同时用作羊毛的洗涤剂,以及用于农业浸种等。食品工业中一种应用最广泛的疏松剂,用于生产饼干、糕点、馒头、面包等,是汽水饮料中二氧化碳的发生剂;可与明矾复合为碱性发酵粉,也可与纯碱复合为民用石碱;还可用作黄油保存剂。消防器材中用于生产酸碱灭火机和泡沫灭火机。橡胶工业利用其与明矾、H发孔剂配合起均匀发孔的作用用于橡胶、海棉生产。冶金工业用作浇铸钢锭的助熔剂。机械工业用作铸钢(翻砂)砂型的成型助剂。印染工业用作染色印花的固色剂,酸碱缓冲剂,织物染整的后方处理剂。染色中加入小苏打可以防止纱筒产生色花。医药工业用作制酸剂的原料。

Sodium bicarbonate can be directly used as a raw material for the pharmaceutical industry to treat hyperacidity. It can also be used in filmmaking, tanning, beneficiation, smelting, metal heat treatment, and in the fiber and rubber industries. It is also used as a detergent for wool and for soaking in agriculture. One of the most widely used loosening agents in the food industry. It is used in the production of biscuits, cakes, steamed bread, bread, etc. It is a carbon dioxide generator in soda drinks. Carnitine; also used as butter preservative. Used in the production of acid and alkali fire extinguishers and foam fire extinguishers in fire fighting equipment. The rubber industry uses it in combination with alum and H pore-forming agents to play the role of uniform pores for rubber and sponge production. The metallurgical industry is used as a flux for casting steel ingots. The machinery industry is used as a molding aid for casting steel (sand blasting) sand molds. The printing and dyeing industry is used as a fixing agent for dyeing and printing, a buffer agent for acid and alkali, and a post-treatment agent for fabric dyeing and finishing. Adding baking soda to the dyeing can prevent the yarn cone from generating color flowers. The pharmaceutical industry is used as a raw material for antacids.

包装与储存Store

应放置室内阴凉干燥处,避免日晒雨淋。

Should be placed in a cool and dry place indoors, avoiding sun and rain.




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