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Calciumdihydroxid Produkt Beschreibung

Calcium hydroxide  Struktur
1305-62-0
CAS-Nr.
1305-62-0
Bezeichnung:
Calciumdihydroxid
Englisch Name:
Calcium hydroxide
Synonyma:
limoid;calvit;limbux;Kemikal;Edelwit;Trulime;biocalc;Ca(OH)2;limemilk;bellmine
CBNumber:
CB9853016
Summenformel:
CaH2O2
Molgewicht:
74.09
MOL-Datei:
1305-62-0.mol

Calciumdihydroxid Eigenschaften

Schmelzpunkt:
580 °C
Siedepunkt:
2850 °C
Dichte
2.24 g/mL at 25 °C(lit.)
storage temp. 
Store at RT.
Löslichkeit
1.7g/l
Aggregatzustand
Solid
Farbe
White
PH
12.6 (H2O, 20℃)(saturated solution)
Wasserlöslichkeit
1.65 g/L (20 ºC)
Sensitive 
Air Sensitive
Merck 
14,1673
Solubility Product Constant (Ksp)
pKsp: 5.26
Stabilität:
Stable. Incompatible with strong acids.
CAS Datenbank
1305-62-0(CAS DataBase Reference)
NIST chemische Informationen
Calcium dihydroxide(1305-62-0)
EPA chemische Informationen
Calcium hydroxide (Ca(OH)2)(1305-62-0)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xi,C
R-Sätze: 41-34-37/38
S-Sätze: 26-39-45-36/37/39-27
RIDADR  3262
WGK Germany  1
RTECS-Nr. EW2800000
34
TSCA  Yes
HS Code  2825 90 19
HazardClass  8
PackingGroup  III
Giftige Stoffe Daten 1305-62-0(Hazardous Substances Data)
Toxizität LD50 orally in rats: 7.34 g/kg (Smyth)
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
H318 Verursacht schwere Augenschäden. Schwere Augenschädigung Kategorie 1 Achtung P280, P305+P351+P338, P310
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung
Sicherheit
P261 Einatmen von Staub vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P304+P340 BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P405 Unter Verschluss aufbewahren.

Calciumdihydroxid Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE KRISTALLE ODER WEISSES PULVER.

CHEMISCHE GEFAHREN

Zersetzung beim Erhitzen unter Bildung von Calciumoxid. Mittelstarke Base in wässriger Lösung. Reagiert sehr heftig mit Säuren. Greift viele Metalle in Gegenwart von Wasser an unter Bildung entzündlichen/explosionsfähigen Gases (Wasserstoff, s. ICSC-Nr. 0001).

ARBEITSPLATZGRENZWERTE

TLV: 5 mg/m?(als TWA) (ACGIH 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.

INHALATIONSGEFAHREN

Verdampfung bei 20°C vernachlässigbar; eine gesundheitsschädliche Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Atemwege und verätzt die Augen und die Haut. ärztliche Beobachtung notwendig.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen. Risiko der Lungenschädigung bei wiederholter oder längerer Exposition gegenüber Staubpartikeln.

LECKAGE

Verschüttetes Material in Behältern sammeln. An sicheren Ort bringen. Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel.

R-Sätze Betriebsanweisung:

R41:Gefahr ernster Augenschäden.
R34:Verursacht Verätzungen.

S-Sätze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S39:Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S27:Beschmutzte, getränkte Kleidung sofort ausziehen.

Beschreibung

Calcium Hydroxide is a colorless crystal or white powder, obtained when CaO (called lime or quicklime) is mixed, or “slaked” with water. It can also be precipitated by mixing CaCl2 andNaOH.The nameof the natural,mineral formis “portlandite”. It is a relatively rare mineral, known from some volcanic, plutonic, and metamorphic rocks. It has also been known to be formed in burning coal dumps.

Chemische Eigenschaften

Calcium hydroxide occurs as a white or almost white, crystalline or granular powder. It has a bitter, alkaline taste. Calcium hydroxide readily absorbs carbon dioxide to form calcium carbonate.

Chemische Eigenschaften

Calcium hydroxide is a soft white crystalline, odorless powder with an alkaline, bitter taste.

Chemische Eigenschaften

White powder

Verwenden

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.

Verwenden

calcium hydroxide is an inorganic base used to adjust the pH of a product, it can also serve as a topical astringent and alkali in solutions or lotions. It can burn the skin and eyes.

Verwenden

Calcium Hydroxide is a general food additive made by adding water to calcium oxide (lime). it has poor water solubility with a solubility of 0.185 g in 100 g of water at 0°c. the ph of a water solution at 25°c is approximately 12.4. it is used to promote dispersion of ingre- dients in sauces, creamed spinach, and a frozen pea/potato dish. it is used at 0.1% to stabilize the potassium iodide of iodized salt, and it is used as a neutralizer for soured cream prior to buttermaking. it is also termed hydrated lime, calcium hydrate, and slaked lime.

Verwenden

Calcium hydroxide, a weak base, has many diverse uses. Among the most important ones are:Flocculants; Paints And Sealants; Mortar; Portland Cement Mortar; Lime Plaster
Other uses that have occurred in industry include:
An alkali used as a lye substitute (NaOH) in no-lye hair relaxers.
? A chemical depilatory agent found in Nair .
? A calcium supplement in mineral fortified baby formulas.
? A chemical reagent used to form a long-lasting fungicide.
? In “reef-aquariums” for adding bio-available calcium in solution for calcium-using animals such as algae, snails, tube worms and corals and also to increase the alkalinity of the water.
? In the tanning industry for neutralization of acid, the liming of hides and skins and the flocculation of resultant wastewater.
? In the oil industry for the manufacture of oil additives (salicatic, sulphatic, fenatic).
? In the chemical industry for manufacture of calcium stearate.
? In the food industry for processing water (for alcoholic and soft drinks).
? Used in the separation of sugar from sugar cane in the sugar industry.
? Used in the processing of Norwegian “Lutefisk”. Dried cod fish is soaked in a mixture of slaked lime and soda to produce a soft-fleshed fish fillet that is steamed or baked and served with potato “Lefse”.
? In the manufacture of brake ? pads, ebonite and pesticides.
? In dentistry, it is used as dressing in paste form used for antimicrobial effect during a dental root canal procedure. Calcium hydroxide is known to have a strong antimicrobial effect and is a boneregeneration stimulant.
? In the production of metals, lime is injected into the waste gas stream to neutralize acids, such as fluorides and chlorides prior to being released to atmosphere.

Vorbereitung Methode

Calcium hydroxide is manufactured by adding water to calcium oxide, a process called slaking.

Definition

Lime water: A solution of calcium hydroxide in water. If carbon dioxide is bubbled through lime water a milky precipitate of calcium carbonate forms. Prolonged bubbling of carbon dioxide turns the solution clear again as a result of the formation of soluble calcium hydrogencarbonate (Ca(HCO3)2).

Allgemeine Beschreibung

Odorless white granules. Sinks in water.

Air & Water Reaktionen

Water soluble. The amount of heat generated by hydrolysis may be large.

Reaktivität anzeigen

The nitroparaffins, nitromethane, nitropropane, etc. form salts with inorganic bases such as Calcium hydroxide . The dry salts are explosive [Chem. Eng. news 30:2344 1952]. Bases are chemically similar to sodium hydroxide (NaOH) or sodium oxide (Na2O). They neutralize acids exothermically to form salts plus water. When soluble in water they give solutions having a pH greater than 7.0. Mixing these materials with water can generate troublesome amounts of heat as the base is dissolved or diluted. Bases react with certain metals (such as aluminum and zinc) to form oxides or hydroxides of the metal and generate gaseous hydrogen. Bases may initiate polymerization reactions in polymerizable organic compounds, especially epoxides). They may generate flammable and/or toxic gases with ammonium salts, nitrides, halogenated organics, various metals, peroxides, and hydroperoxides. Materials of this group often serve as catalysts. A strong base. Forms caustic solution in water [Merck 11th ed. 1989].

Hazard

Skin, eye, and upper respiratory tract irri- tant, avoid inhalation.

Health Hazard

Dust irritates eyes, nose and throat.

Landwirtschaftliche Anwendung

Calcium hydroxide Ca(OH)2also called slaked lime or hydrated lime, is a white solid which dissolves sparingly in water. It is used as an acid neutralizing material and has an efficiency of 135% compared to 100% for calcium carbonate.

Landwirtschaftliche Anwendung

Calcium hydroxide, [Ca(OH)2], also called slaked lime or hydrated lime, is a white solid that dissolves sparingly in water. It is manufactured by adding water to calcium oxide, a process that emits heat and is known as slaking.
Calcium hydroxide is a cheap alkali, used for neutralizing the acidity of acid soils and in the manufacture of mortar, white wash, bleaching powder and glass. It is an excellent absorbent for carbon dioxide to produce insoluble calcium carbonate and has a neutralizing value of 179%, compared to 100% of pure calcium carbonate.

Landwirtschaftliche Anwendung

Slaked lime is another name for calcium hydroxide or hydrated lime. It contains 50% calcium and is a standard liming material. Slaked lime is prepared by hydrating calcium oxide and has a calcium carbonate equivalent of 136.

Pharmazeutische Anwendungen

Calcium hydroxide is a strong alkali and is used as a pharmaceutical pH adjuster/buffer and antacid in topical medicinal ointments, creams, lotions, and suspensions, often as an aqueous solution (lime water). It forms calcium soaps of fatty acids, which produce water-in-oil emulsions (calamine liniment), and it is also used as a topical astringent.
Calcium hydroxide is a common cosmetic ingredient in hairstraightening and hair-removal products, and in shaving preparations.
1) In dentistry, it is used as a filling agent and in dental pastes to encourage deposition of secondary dentine. Calcium hydroxide was traditionally used as an escharotic in Vienna Paste.

Sicherheitsprofil

Mildly toxic by ingestion. A severe eye irritant. A skin, mucous membrane, and respiratory system irritant. Mutation data reported. Causes dermatitis. Dust is considered to be a significant industrial hazard. A common air contaminant. Violent reaction with maleic anhydride, nitroethane, nitromethane, nitroparaffins, nitropropane, phosphorus. Reaction with polychloiinated phenols + potassium nitrate forms extremely toxic products. See also CALCIUM COMPOUNDS

Sicherheit(Safety)

Calcium hydroxide is used in oral and topical pharmaceutical formulations. It is mildly toxic by ingestion. In the pure state, calcium hydroxide is a severe skin, eye, and respiratory irritant, and it is corrosive, causing burns. Typical exposure limits are TVL 5 mg/m3 in air.
LD50 (mouse, oral): 7.3 g/kg
LD50 (rat, oral): 7.34 g/kg

mögliche Exposition

Calcium hydroxide is used in agriculture and in fertilizer manufacture; it is used in the formulation of mortar, plasters, and cements; it is used as a scrubbing and neutralizing agent in the chemical industry. For making insecticides, acaricides, and products to control arthropods

Lager

Calcium hydroxide should be stored in an airtight container, in a cool, dry, well-ventilated place. Calcium hydroxide powder may be sterilized by heating for 1 hour at a temperature of at least 1608℃.

Versand/Shipping

UN3262 Corrosive solid, basic, inorganic, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name required

läuterung methode

Heat analytical grade calcium carbonate at 1000o during 1hour. Allow the resulting oxide to cool and add slowly to water. Heat the suspension to boiling, cool and filter through a sintered glass funnel of medium porosity (to remove soluble alkaline impurities). Dry the solid at 110o and crush it to a uniformly fine powder. [Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 934 1963.]

Inkompatibilitäten

May react violently with acids, maleic anhydride, nitromethane, nitroethane, nitropropane, nitroparaffins, and phosphorus.

Inkompatibilitäten

Incompatible with strong acids, maleic anhydride, phosphorus, nitroethane, nitromethane, nitroparaffins, and nitropropane. Calcium hydroxide can be corrosive to some metals.

Waste disposal

Landfill or admixture with acid industrial wastes prior to lagooning

Regulatory Status

GRAS listed. Accepted for use as a food additive in Europe. Included in the FDA Inactive Ingredients Database (intravenous and subcutaneous injections; oral suspensions and tablets; topical emulsions and creams). Included in parenteral preparations licensed in the UK.

Calciumdihydroxid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Calciumdihydroxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 287)Lieferanten
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Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-518-85110578 18805133257
+86-518-85110578 sales3257@jskolod.com CHINA 100 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21935 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20676 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32452 55
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86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1815 55
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1305-62-0(Calciumdihydroxid)Verwandte Suche:


  • CALCIUM HYDROXIDE PWD
  • calvit
  • carboxide
  • Edelwit
  • hydroxydedecalcium
  • kalkhydrate
  • Kemikal
  • limbux
  • limemilk
  • limewhite
  • limoid
  • milkoflime
  • Red hot pellets
  • Trulime
  • CALCIUMHYDROXIDE,POWDER,REAGENT,ACS
  • CALCIUMHYDROXIDE,POWDER,USP,EP,BP,JP
  • CALCIUMHYDROXIDE,TECH(HYDRATEDLIM)(BULK
  • CALCIUMHYDROXIDE,TECHNICAL
  • CARBIDE LIME
  • Calciumhydroxid8
  • Calcium Hydroxde
  • Calcium hydroxide, ACS, 95.0% min
  • Calcium Hydroxide, powder
  • Calcium hydroxide, min. 98%
  • Calcium hydroxide, (L-A196)
  • Calcium Hydroxide, Powder, Reagent
  • Calcium hydroxide, 98+%, extra pure
  • Calcium hydroxide, 95+%, for analysis ACS
  • Calcium hydroxide, extra pure
  • Calcium hydroxide, for analysis ACS
  • Calcium dihydoxide
  • Calcium Hydroxide, Acs Min
  • Calcium hydrate Lime hydrate Caustic lime
  • Calcium hydroxide, 90%, synthesis grade
  • Calcium hydroxide/96+%
  • CalciuM Hydroxide (AS)
  • EMPROVE(R) CalciuM Hydroxide, Precipitated, Extra Pure, USP, FCC
  • Calcium Hydroxide (1 g) (AS)
  • CalciuM hydroxide, for analysis ACS, 95+% 1KG
  • CalciuM hydroxide, 99.995%, (trace Metal basis)
  • CALCIUM HYDROXIDE FOR ANALYSIS EMSURE
  • CALCIUM HYDROXIDE FOR THE PREPARATION OF
  • CalciuM Hydroxide, Reagent
  • CalciuM hydroxide 99.995% trace Metals basis
  • Calcium hydroxide ACS reagent, >=95.0%
  • Calcium hydroxide puriss. p.a., Reag. Ph. Eur., >=96%
  • Calcium hydroxide Vetec(TM) reagent grade, 95%
  • DECYL GLUCOPYRANOSIDE ULTRA PURE GRADE
  • POTASSIUM PERSULFATE ACS GRADE
  • Calcium hydroxide≥ 99% (Assay)
  • Calcium Hydroxide, Reag. Ph. Eur.
  • Calcium hydroxide, For ACS analysis
  • Calcium Hydroxide Topical Solution
  • SLAKED LIME
  • CALCIUM OXIDE, HYDRATED
  • CALCIUM (II) HYDROXIDE
  • CALCIUM HYDROXIDE SOLUTION
  • CALCIUM HYDROXIDE TS
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