Home Categories Inorganic chemistry Strontium nitrate
A7257512

Strontium nitrate , 99.5% , 10042-76-9

Synonym(s):
Strontium nitrate

CAS NO.:10042-76-9

Empirical Formula: N2O6Sr

Molecular Weight: 211.63

MDL number: MFCD00011248

EINECS: 233-131-9

Update time: 2022-07-08

PRODUCT Properties

Melting point: 570 °C (lit.)
Boiling point: 645 °C
Density  2.99
storage temp.  Store at +5°C to +30°C.
solubility  660g/l
form  Solid
color  White
Specific Gravity 2.99
Odor Odorless
PH Range 5.0 - 7.0
PH 5-7 (50g/l, H2O, 20℃)
Water Solubility  660 g/L (20 ºC)
Sensitive  Hygroscopic
Merck  14,8845
Stability: Strong oxidizer - contact with combustible material may cause fire. Incompatible with strong reducing agents, combustible material.
InChIKey DHEQXMRUPNDRPG-UHFFFAOYSA-N

Description and Uses

Strontium nitrate has the molecular formula of Sr(NO3)2 and the molecular weight of 211.6327 g/mol. Strontium nitrate is prepared by treating strontium carbonate with nitric acid. The solution is evaporated and crystallized:
SrCO3 +HNO3 ? Sr(NO3)2 + CO2 +H2O
Crystallization yields the tetrahydrate, Sr(NO3)2· 4H2O, which, on heating, melts at 31.3 °C in its own waters of hydration and then decomposes >100 °C to form the anhydrous nitrate. The anhydrate melts at 570 °C (It begins to decompose as low as 545 °C), is soluble in water (70.3 gm/100 ml at 20 °C) and is very slightly soluble in ethanol. These colorless crystals, or white powder, have a density of 2.986 g/cm3 and its CAS number is 10042-76-9. It is very soluble in water, as shown in Table 4.11 on the following page. Strontium nitrate apparently forms only the tetrahydrate when a solution is evaporated below 80°C. Otherwise it decomposes at higher solution temperatures to Sr(OH)2 and nitrogen oxides. The nitric acid concentration makes little difference in the hydrate produced, in contrast to other alkaline earths like Ca and Mg.

Used in preparation of strontium standard solutions

Safety

Symbol(GHS) 
GHS03,GHS05
Signal word  Danger
Hazard statements  H271-H318
Precautionary statements  P210-P220-P280-P283-P305+P351+P338-P306+P360
Hazard Codes  O,Xi,Xn
Risk Statements  8-36/37/38-22
Safety Statements  17-26-36/37/39-36
RIDADR  UN 1507 5.1/PG 3
WGK Germany  2
RTECS  WK9800000
TSCA  Yes
HazardClass  5.1
PackingGroup  III
HS Code  28342980
Toxicity LD50 i.p. in rats: 540 mg/kg, Cochran et al., Arch. Ind. Hyg. 1, 637 (1950)

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