滑石

English text reference: Chinese Pharmacopoeia (2020 Edition)
中文文本参考：《中国药典（2020年版）》

Overview 概述

Talc is the talc mineral of the talc family, a silicate mineral containing hydrated magnesium silicate [Mg3(Si4O10)(OH)2]. After mining, remove mud and impurities.
本品为硅酸盐类矿物滑石族滑石，主含含水硅酸镁[Mg3(Si4O10)(OH)2]。采挖后，除去泥沙和杂石。

Description 性状

Talc is mostly in the form of irregular lumps. It is white, yellowish-white, or light blue-gray, with a waxy luster. It is soft and delicate, feels smooth to the touch, non-hygroscopic, and does not disintegrate in water. It has a slight odor and a mild taste.
本品多为块状集合体。呈不规则的块状。白色、黄白色或淡蓝灰色，有蜡样光泽。质软，细腻，手摸有滑润感，无吸湿性，置水中不崩散。气微，味淡。

Identification 鉴别

(1) To 0.2g of the powder add an equal amount of calcium fluoride or sodium fluoride powder in a platinum crucible, stir, add 5ml of sulfuric acid, heat gently, immediately cover the platinum crucible containing a drop of water, wait for a moment, remove the platinum crucible cover, and observe the appearance of white turbidity in the water droplet.
(1)取本品粉末0.2g，置铂坩埚中，加等量氟化钙或氟化钠粉末，搅拌，加硫酸5ml，微热，立即将悬有1滴水的铂坩埚盖盖上，稍等片刻，取下铂坩埚盖，水滴出现白色浑浊。

(2)To 0.5g of the powder add 10ml of hydrochloric acid solution (4→10) in a beaker, cover with a watch glass, heat to slight boiling, shake the beaker from time to time, and maintain slight boiling for 40 minutes. Remove, filter through a rapid filter paper, wash the residue with water 4-5 times. Take about 0.1g of the residue in a platinum crucible, add 10 drops of sulfuric acid (1→2) and 5ml of hydrofluoric acid, heat until white fumes of sulfur trioxide appear, remove and cool, add 10ml of water to dissolve, and take 2 drops of the solution. Add 1 drop of magnesium reagent (dissolve 0.01g of 2,4-dinitrophenol in 4% sodium hydroxide solution 1000ml) and drop sodium hydroxide solution (4→10) to make it alkaline, and a sky-blue precipitate is formed.
(2)取本品粉末0.5g，置烧杯中，加入盐酸溶液(4→10)10ml，盖上表面皿，加热至微沸，不时摇动烧杯，并保持微沸40分钟，取下，用快速滤纸滤过，用水洗涤残渣4～5次。取残渣约0.1g，置铂坩埚中，加入硫酸(1→2)10滴和氢氟酸5ml，加热至冒三氧化硫白烟时，取下冷却后，加水10ml使溶解，取溶液2滴。加镁试剂(取对硝基偶氮间苯二酚0.01g溶于4%氢氧化钠溶液1000ml中)1滴，滴加氢氧化钠溶液(4→10)使成碱性，生成天蓝色沉淀。

Prepared Slices 饮片

Talc 滑石

Processing 炮制

Remove impurities, wash, crush into small pieces, grind into fine powder, or use the water flying method (General Rule 0213) to fly in water, and dry.
除去杂石，洗净，砸成碎块，粉碎成细粉，或照水飞法(通则0213)水飞，晾干。

Property 性

Cold.
寒。

Flavor 味

Sweet and tasteless.
甘、淡。

Meridian tropism 归经

Sweet and tasteless, cold in nature. It enters the Bladder, Lung, and Stomach meridians.
归膀胱、肺、胃经。

Actions 功能

It promotes diuresis and relieves stranguria, clears heat and relieves summer heat; externally used to dispel dampness and heal sores.
利尿通淋，清热解暑；外用祛湿敛疮。

Indications 主治

It is used for hot stranguria, urinary calculi, hot and painful urination, summer heat with restlessness and thirst, damp-heat diarrhea; externally used for eczema, damp sores, and prickly heat.
用于热淋，石淋，尿热涩痛，暑湿烦渴，湿热水泻；外治湿疹，湿疮，痱子。

Dosage 用量

10-20g.
10～20g。

Administration 用法

Decocted first. For external use, use an appropriate amount.
先煎。外用适量。

Storage 贮藏

Store in a dry place.
置干燥处。

滑石

Text reference: Chinese Pharmacopoeia (2015 Edition)
文本参考：《中国药典（2015年版）》

Overview 概述

Talc is a mineral of silicates of talcum group, containing mainly hydrated magnesium silicate [Mg3(Si4O10)(OH)2]. The drug is collected, and removed from foreign matter.
本品为硅酸盐类矿物滑石族滑石，主含含水硅酸镁〔Mg3（Si4O10）（OH）2〕。采挖后，除去泥沙和杂石。

Description 性状

Aggregates of masses, irregular, white, yellowish-white or pale bluish-grey, with waxy lustre. Texture soft, smooth and unctuous on touching. Nonhy-groscopic, non-disintegrated in water. Odour, slight; taste, weak.
本品多为块状集合体。呈不规则的块状。白色、黄白色或淡蓝灰色，有蜡样光泽。质软，细腻，手摸有滑润感，无吸湿性，置水中不崩散。气微，味淡。

Identification 鉴别

（2）取本品粉末0.5g，置烧杯中，加入盐酸溶液（4→10）10ml，盖上表面皿，加热至微沸，不时摇动烧杯，并保持微沸40分钟，取下，用快速滤纸滤过，用水洗涤残渣4～5次。取残渣约0.1g，置铂坩埚中，加入硫酸（1→2）10滴和氢氟酸5ml，加热至冒三氧化硫白烟时，取下冷却后，加水10ml使溶解，取溶液2滴。加镁试剂（取对硝基偶氮间苯二酚0.01g溶于4%氢氧化钠溶液1000ml中）1滴，滴加氢氧化钠溶液（4→10）使成碱性，生成天蓝色沉淀。
（1）取本品粉末0.2g，置铂坩埚中，加等量氟化钙或氟化钠粉末，搅拌，加硫酸5ml，微热，立即将悬有1滴水的铂坩埚盖盖上，稍等片刻，取下铂坩埚盖，水滴出现白色浑浊。

Examination 检查

Water 水分

Not more than 14.0 per cent <0832,method 2>.
不得过14.0%（通则0832第二法）。

Total ash 总灰分

Not more than 8.0 per cent <2302>.
不得过8.0%（通则2302）。

Extractives 浸出物

Carry out the method for determination of ethanol-soluble Extractives <2201,the cold maceration method>, using anhydrous ethanol as the solvent,not less than 1.9 per cent.
照醇溶性浸出物测定法（通则2201）项下的冷浸法测定，用无水乙醇作溶剂，不得少于1.9%。

Prepared slices 饮片

Talcum 滑石

Processing 炮制

Eliminate foreign matter, wash clean, break to pieces, pulverize to fine powder, or carry out the method for levigating <0213>, levigate the drug to fine powder, and dry in the shade.
除去杂石，洗净，砸成碎块，粉碎成细粉，或照水飞法（通则0213）水飞，晾干。

Property 性

Cold.
寒。

Flavor 味

Sweet, bland.
甘、淡。

Meridian tropism 归经

Bladder, lung and stomach meridians.
归膀胱、肺、胃经。

Actions 功能

To disinhibit urine, relieve stranguria, clear heat and release summerheat. Topical application: To dispel dampness and promote wound healing.
利尿通淋，清热解暑；外用祛湿敛疮。

Indications 主治

Heat strangury, stone strangury, heat strangury with chronic pain, summerheat-dampness vexation and thirst, and dampness-heat watery diarrhea; Topical application: eczema, dampness sore, and heat rash.
用于热淋，石淋，尿热涩痛，暑湿烦渴，湿热水泻；外治湿疹，湿疮，痱子。

Dosage 用量

10-20 g. It should be decocted first. Appropriate amount for topical application.
10～20g，先煎。外用适量。

Storage 贮藏

Preserve in a dry place.
置干燥处。