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Calcium hydroxide

Calcium hydroxide structure

CAS No:
1305-62-0
Formula:
CaH2O2
Chemical Name:
Calcium hydroxide
Synonyms:
Calcium hydroxide (Ca(OH)2);Calcium hydroxide;Lime water;Hydrated lime;Milk of lime;Calcium dihydroxide;Carboxide;Kalkhydrate;Biocalc;Slaked lime;Limbux;Calvit;Lime milk;Hydralime;Caldic 1000;NICC 3000;Lime hydrate;Rhenofit CF;SA 074;Yukijirushisakanyo;Calbit;Kentoku K 100;Super Microstar;A-Rock;Calbreed;CH 2N;TP 2B;CLS-B;Karutekku LT;LoFloSorb;Cal-Z;Precal 54;Microstar T;TempCanal;Calcicure;Caldic 2000;Ecolomaster;Superia;Yukijirushi Shosekkai;Soprocal;Rhein CF 1;BTTE;Calen;Vitacal H;High Purity Calcium Hydroxide CH;Nekablanc 0;HA 20;HA 20 (hydroxide);Kalic;SA 149;Nekapur 2;Ultradent-UltraCal XS;JIS-R 9001;HP-XL;Omix C;Calcium Hydroxide Plus Points;Tamakalk-Spongiacal;NICC 5000;Lime Type S;Lime S;Sorbacal SP;Sorbacal SPS;CL 90S;Tama Ace S;CF 2000;Fluorox E;Okhotsk Calcium F 2000;Okhotsk Calcium F 015;Okhotsk Calcium OH-I;Okhotsk Calcium OH;Scallow S;Rutaro;Edelhydrate CL 90S;JYH-S 01;350M;SL 90T;Innovox OH;1333-29-5;7719-01-9;1351974-67-8
Categories:
Water Treatment Chemical > Flocculant

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Description

White, odorless powder. [Note: Readily absorbs CO₂ from the air to form calcium carbonate.]

Calcium hydroxide Basic Attributes

Molecular Weight：

7409

Exact Mass：

73.96810

EC Number：

215-137-3

HScode：

2825909000

Characteristics

PSA：

Appearance：

White Solid

Density：

2.24 g/cm³

Melting Point：

580 °C (decomp)

Boiling Point：

2850 °C

Water Solubility：

H2O: 165 g/L (20 ºC)

Storage Conditions：

Store at RT

Vapor Pressure：

0 mmHg (approx)

Flammability characteristics：

Noncombustible Solid

Odor：

Odorless

Taste：

Slightly bitter alkaline taste

PH：

pH = 12.4 (aqueous solution saturated at 25 °C)

Safety Information

Packing level：

III

Hazard category：

Transport codes：

3262

wgk germany：

hazard class code：

41-34-37/38

safety instructions：

26-39-45-36/37/39-27

RTECS Number：

EW2800000

Marks：

Xi,C

Storage features：

Separated from strong acids.

Stability/Shelf Life：

Stable. Incompatible with strong acids.

Precautionary statement(s)：

P261-P280-P305 + P351 + P338

Hazard Statements：

H315-H318-H335

GHS Classification：

|Danger|H314 (22.6%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]|P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P362, P363, P403+P233, P405, and P501|Aggregated GHS information provided by 6616 companies from 48 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H315: Causes skin irritation [Warning Skin corrosion/irritation]|P260, P264, P270, P280, P302+P352, P305+P351+P338, P307+P311, P310, P314, P321, P332+P313, P362, P405, and P501

Calcium hydroxide Use and Manufacturing

Uses

In mortar, plaster, cement and other building and paving materials; in lubricants, drilling fluids, pesticides, fireproofing coatings, water paints; as egg preservative; manufacture of paper pulp; in SBR rubber vulcanization; in water treatment; dehairing hides.

Use Classification：

Cosmetics -> Buffering

Computed Properties

Molecular Weight:74.09
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:2
Exact Mass:73.9680702
Monoisotopic Mass:73.9680702
Topological Polar Surface Area:2
Heavy Atom Count:3
Complexity:2.8
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

Material

Calcium carbonate

Coke (coal)

Downstream Products

Lithium hydroxide

Calcium formate

Propylene Oxide

Calcium phosphate dibasic

Calcium hypochlorite

Calcium iodate

Sodium alginate

Price Analysis

Make your Calcium hydroxide purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Calcium hydroxide prices .

Data: 2026-06-30
Price: 880.00Yuan/mt
Change: 320.0

Drug Function and Efficacy

Participates in bone formation and reconstruction of bone tissue after fracture, as well as muscle contraction, nerve transmission, coagulation mechanism and reduces capillary permeability, etc.

This ingredient has been used in drugs with the following functions (note: it does not mean that the ingredient itself has the following health functions)

Related Drugs

Oyster calcium carbonate tablets
Ingredients	The main component of this product is calcium compounds mainly composed of calcium carbonate and calcium hydroxide, which are obtained by calcining oyster shells at high temperature.
Indication	1 This product should not be used in combination with digitalis drugs. 2 Drinking large amounts of alcoholic and caffeinated beverages and smoking large amounts of cigarettes will inhibit the absorption of calcium. 3 Eating large amounts of fiber-rich foods can inhibit the absorption of calcium, because calcium combines with cellulose to form compounds that are not easily absorbed. 4 This product is used in combination with phenytoin sodium and tetracyclines, and the absorption of both is reduced. 5 Vitamin D, birth control pills, and estrogen can increase calcium absorption. 6 When aluminum-containing antacids are taken with this product, aluminum absorption increases. 7 When this product is used in combination with thiazide diuretics, hypercalcemia is likely to occur (due to increased renal tubular weight of calcium).
Specifications	25mg (calculated as Ca)
Manufacturer	Chengdu First Pharmaceutical Co., Ltd.

Oyster calcium carbonate granules
Ingredients	Calcium compounds mainly composed of calcium carbonate and calcium hydroxide, as well as zinc, iron, magnesium, vitamin D, and aminoceramic acid are obtained by calcining and converting oyster shells at high temperatures.
Indication	1 This product should not be used in combination with digitalis drugs. 2 Drinking large amounts of alcoholic and caffeinated beverages and smoking large amounts of cigarettes will inhibit the absorption of calcium. 3 Eating large amounts of fiber-rich foods can inhibit the absorption of calcium, because calcium combines with cellulose to form compounds that are not easily absorbed. 4 This product is used in combination with phenytoin sodium and tetracyclines, and the absorption of both is reduced. 5 Vitamin D, birth control pills, and estrogen can increase calcium absorption. 6 When aluminum-containing antacids are taken with this product, aluminum absorption increases. 7 When this product is used in combination with thiazide diuretics, hypercalcemia is likely to occur (due to increased renal tubular weight of calcium).
Specifications	5g:50mg (calculated as Ca)

Oyster calcium carbonate granules
Ingredients	Calcium compounds mainly composed of calcium carbonate and calcium hydroxide, as well as zinc, iron, magnesium, vitamin D, and aminoceramic acid are obtained by calcining and converting oyster shells at high temperatures.
Indication	1 This product should not be used in combination with digitalis drugs. 2 Drinking large amounts of alcoholic and caffeinated beverages and smoking large amounts of cigarettes will inhibit the absorption of calcium. 3 Eating large amounts of fiber-rich foods can inhibit the absorption of calcium, because calcium combines with cellulose to form compounds that are not easily absorbed. 4 This product is used in combination with phenytoin sodium and tetracyclines, and the absorption of both is reduced. 5 Vitamin D, birth control pills, and estrogen can increase calcium absorption. 6 When aluminum-containing antacids are taken with this product, aluminum absorption increases. 7 When this product is used in combination with thiazide diuretics, hypercalcemia is likely to occur (due to increased renal tubular weight of calcium).
Specifications	5g:50mg (calculated as Ca)
Manufacturer	Kangmei Baoning(Sichuan)Pharmaceutical Co., Ltd.

See More Related Drugs

Registered Holders

ANMOL CHEMICALS PRIVATE LTD

United States
Active
PFANSTIEHL INC

United States
Active
MLA INDUSTRIES PVT LTD

United States
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