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Properties of substance:
sodium dihydrogen pyrophosphate
Group of substances:
inorganic
Empirical formula (Hill's system for organic substances):
H
2
Na
2
O
7
P
2
Structural formula as text:
Na2H2P2O7
Molar/atomic mass: 221.939
Decomposition temperature (°C):
220
Solubility (g/100 g of solvent):
ethanol
: sparingly soluble [
Ref.
]
water
: 14.95 (18°C) [
Ref.
]
water
: 18.37 (40°C) [
Ref.
]
Reactions of synthesis:
[
Ref.1
]
2NaH
2
PO
4
→ Na
2
H
2
P
2
O
7
+ H
2
O
[
Ref.1
]
Na
4
P
2
O
7
+ 2CH
3
COOH → Na
2
H
2
P
2
O
7
+ 2CH
3
COONa
References:
CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-90
Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 138 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 122 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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