calcium(kălˈsēəm)[Lat.,=lime], metallic chemical element; symbol Ca; at. no. 20; at. wt. 40.078; m.p. about 839℃; b.p. 1,484℃; sp. gr. 1.55 at 20℃; valence +2. Calcium is a malleable, ductile, silver-white, relatively soft metal with face-centered, cubic crysta...
a malleable silvery-white metallic element of the alkaline earth group; the fifth most abundant element in the earth's crust (3.6 per cent), occurring esp as forms of calcium carbonate. It is an essential constituent of bones and teeth and is used as a deoxidizer in steel. Symbol: Ca; ...
Symbol(GHS) GHS02 Signal wordDanger Hazard statementsH261 Precautionary statementsP231+P232 Hazard CodesF Risk Statements15 Safety Statements8-24/25-43 RIDADRUN 1401 4.3/PG 2 WGK Germany1 TSCAYes HazardClass4.3 PackingGroupII HS Code28051200 ...
4.1 Symbol GHS05;GHS07; 4.1 Hazard Codes C 4.1 Signal Word DANGER 4.1 Risk Statements R34 4.1 Safety Statements S25;S26;S36/37/39;S45 4.1 Exposure Standards and Regulations Calcium oxide used as a general purpose food additive is generally recognized as safe when used in accordance with good...
Symbol(GHS) GHS07 Signal wordWarning Hazard statementsH319 Precautionary statementsP264-P280-P305+P351+P338-P337+P313P Hazard CodesXi Risk Statements36/37 Safety Statements22-26-37/39 OEBB OELTWA: 10 mg/m3 (total) WGK Germany3 RTECSVV9170000 ...
aPlease add information about marking of polymeric part About ABS GP-22 - the classification should be 5.1.a and the symbol ABS GF22, 请增加关于聚合物部分标号的信息关于吸收GP-22 -分类应该是5.1.a和标志吸收GF22,[translate] athe particle shape is also important .long,slender particles tend ali...
A 25.0 mL sample of 0.15 M silver nitrate, AgNO3, is reacted with a 3.58g sample of calcium chloride, CaCl2 (M=111.0). Which of the following statements is true? A Silver nitrate is the limting reactant and calcium nitrate precicpitates. B Silver nitrate is the limiting reactant and ...
4.1 Symbol GHS05, GHS07 4.1 Hazard Codes Xi 4.1 Signal Word Danger 4.1 Risk Statements R41 4.1 Safety Statements S26;S39 4.1 Exposure Standards and Regulations Substance added directly to human food affirmed as generally recognized as safe (GRAS). Calcium hydroxide used as a general purpose food...
Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It ...
Symbol(GHS) GHS05,GHS07 Signal wordDanger Hazard statementsH315-H318-H335 Precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338 Hazard CodesXi,C Risk Statements41-34-37/38 Safety Statements26-39-45-36/37/39-27