58.5 °C (137.3 °F; 331.6 K) (monohydrate) 315 °C (anhydrous)
Boiling point
decomposes to Na2S2O7 (+ H2O) at 315 °C (599 °F; 588 K)
Solubility in water
28.5 g/100 mL (25 °C) 100 g/100 mL (100 °C)
Solubility
Insoluble in ammonia
Acidity (pKa)
1.99
Structure
Crystal structure
triclinic (anhydrous) monoclinic (monohydrate)
Hazards
GHS labelling:
Pictograms
Signal word
Danger
Hazard statements
H318
Precautionary statements
P280, P305+P351+P338, P310
NFPA 704 (fire diamond)
2
0
1
Flash point
Non-flammable
Safety data sheet (SDS)
External MSDS
Related compounds
Other anions
Sodium sulfate
Other cations
Potassium bisulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Chemical compound
Sodium bisulfate, also known as sodium hydrogen sulfate,[a] is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate is an acid salt formed by partial neutralization of sulfuric acid by an equivalent of sodium base, typically in the form of either sodium hydroxide (lye) or sodium chloride (table salt). It is a dry granular product that can be safely shipped and stored. The anhydrous form is hygroscopic. Solutions of sodium bisulfate are acidic, with a 1M solution having a pH of slightly below 1.
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Sodiumbisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate...
route to sodium carbonate. Sodium sulfate reacts with sulfuric acid to give the acid salt sodiumbisulfate: Na2SO4 + H2SO4 ⇌ 2 NaHSO4 Sodium sulfate displays...
in "bisulfate" comes from an outdated naming system and is based on the observation that there is twice as much sulfate (SO2−4) in sodiumbisulfate (NaHSO4)...
sodium bisulfate with a chemical formula of NaHSO4 which has a pH of around 1. Sodium pyrosulfate is obtained by the dehydration of sodiumbisulfate: 2 NaHSO4...
It can be used as a weaker alternative to sulfuric acid, although sodiumbisulfate is much more common. A related compound of the (NH4)3H(SO4)2 formula...
impure deposits of salt (sodium chloride) with the required chemicals (small quantities of sodium sulfate, sodiumbisulfate and ferric sulfate) and charcoal...
Sodium dithionite (also known as sodium hydrosulfite) is a white crystalline powder with a sulfurous odor. Although it is stable in dry air, it decomposes...
Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula...
Potassium bisulfate (potassium bisulphate) is an inorganic compound with the chemical formula KHSO4 and is the potassium acid salt of sulfuric acid. It...
prepared in a two-step process by treating dicalcium phosphate with sodium bisulfate, which precipitates calcium sulfate: CaHPO4 + NaHSO4 → NaH2PO4 + CaSO4...
can be prepared in the laboratory by the two-stage pyrolysis of sodiumbisulfate. Sodium pyrosulfate is an intermediate product: Dehydration at 315 °C:...
was sodiumbisulfate; it also contained sodium carbonate as well as sodium lauryl sulfate, talc, sodium chloride, fragrance and dye. When sodium bisulfate...
speed from 32 to 64. The bleaching bath used potassium dichromate and sodiumbisulfate; the redeveloper was a fogging developer, and so unstable that its...
corresponding sulfate or bisulfate. Sulfuric acid reacts with sodium chloride, and gives hydrogen chloride gas and sodiumbisulfate: NaCl + H2SO4 → NaHSO4...
reversing Panatomic-X ("Direct Positive Film Developing Outfit") used sodiumbisulfate in place of sulfuric acid in the bleach, and used a fogging developer...
treatment with molten sodiumbisulfate. The insoluble residue, containing ruthenium, osmium, and iridium, is treated with sodium oxide, in which Ir is...
different types of acidifiers, such as alum, acidified liquid alum, sodiumbisulfate, ferric sulfate, and sulfuric acid, that have been used by the poultry...
Australia and New Zealand where it is listed as additive 514. Food-grade sodiumbisulfate is used in a variety of food products, including beverages, dressings...
shelf-life. The salt is prepared by the electrolytic oxidation of sodiumbisulfate: 2 NaHSO 4 ⟶ Na 2 S 2 O 8 + H 2 {\displaystyle {\ce {2 NaHSO4 -> Na2S2O8...
potassium bisulfate in sulfuric acid at a high current density. 2 KHSO4 → K2S2O8 + H2 It can also be prepared by adding potassium bisulfate (KHSO4) to...
Treatment of organic nitriles with sodium azide in the presence of iodine or silica-supported sodiumbisulfate as a heterogeneous catalyst enables an...
storage facilities. The process involves intermediate formation of sodiumbisulfate, an exothermic reaction that occurs at room temperature: NaCl + H2SO4...
E513 Sulfuric acid acid Approved in the EU. E514 Sodium sulfates (i) Sodium sulfate (ii) sodiumbisulfate acid Approved in the EU. E515 Potassium sulfates...
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