Substance profile
Sodium hydrogensulphate
Sodium hydrogensulphate: bisulfate, aqueous solution is a white crystalline solid dissolved in water.
01 · Identification
What Sodium hydrogensulphate is
Sodium hydrogensulphate: bisulfate, aqueous solution is a white crystalline solid dissolved in water. Its molecular formula is HNaO4S and its molecular weight is 120.06 g/mol. It melts at 315 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Sodium hydrogensulphate identifiers and molecular data
Sodium hydrogensulphate CAS number and EC number
Sodium hydrogensulphate molecular formula and molecular weight
03 · GHS classification
Sodium hydrogensulphate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Sodium hydrogensulphate pictograms and signal word
Sodium hydrogensulphate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 1 | H318 | GHS05 |
Sodium hydrogensulphate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H318 | Causes serious eye damage. |
This page lists only the codes assigned to Sodium hydrogensulphate. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Sodium hydrogensulphate
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Sodium hydrogensulphat… issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Sodium hydrogensulphate precautionary statements
CLP Annex VI assigns 4 precautionary statements to Sodium hydrogensulphate. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Sodium hydrogensulphate name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | натриев хидрогенсулфат |
| Spanish español | Hidrogenosulfato de sodio |
| Czech čeština | hydrogensíran sodný |
| Danish dansk | natriumhydrogensulfat |
| German Deutsch | Natriumhydrogensulfat |
| Estonian eesti | naatriumvesiniksulfaat |
| Greek ελληνικά | όξινο θειικό νάτριο |
| English English | sodium hydrogensulphate |
| French français | hydrogénosulfate de sodium |
| Croatian hrvatski | natrijev hidrogensulfat |
| Italian italiano | idrogenosolfato di sodio |
| Latvian latviešu | nātrija hidrogēnsulfāts |
| Lithuanian lietuvių | natrio vandenilio sulfatas |
| Hungarian magyar | nátrium-hidrogén-szulfát |
| Maltese Malti | idroġensulfat tas-sodju |
| Dutch Nederlands | natriumwaterstofsulfaat |
| Polish polski | wodorosiarczan(VI) sodu kwaśny siarczan sodu |
| Portuguese português | hidrogenossulfato de sódio |
| Romanian română | hidrogenosulfat de sodiu |
| Slovak slovenčina | hydrogensíran sodný |
| Slovenian slovenščina | natrijev hidrogensulfat |
| Finnish suomi | natriumvetysulfaatti |
| Swedish svenska | natriumvätesulfat |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Sodium hydrogensulphate GHS label elements
Everything CLP Annex VI fixes for Sodium hydrogensulphate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Sodium hydrogensulphate
- Causes serious eye damage.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF IN EYES:
- Immediately call a POISON CENTER/doctor/…
- Remove contact lenses, if present and easy to do. Continue rinsing.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Sodium hydrogensulphate in the GHS label constructor →
07 · Health hazards
Sodium hydrogensulphate health hazards and exposure limits
Sodium hydrogensulphate hazard summary
Corrosive to metals and tissues; Toxic by ingestion, inhalation, or skin contact; [CAMEO] Aqueous solutions are strong acids; [Merck Index] Harmful if swallowed; Do not inhale dust or aerosol; may cause acute lung edema if inhaled; [MSDSonline] Based on animal studies, not a skin irritant; [CHEMINFO]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Sodium hydrogensulphate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Sodium hydrogensulphate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 315 °C (599 °F) | Haz-Map |
Sodium hydrogensulphate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 2.4351 g/cm³ | at 25 °C | DOE PAC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Sodium hydrogensulphate storage and handling
Sodium hydrogensulphate reactivity
Acidic salts, such as SODIUM BISULFATE, SOLUTION, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pHs of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. The combination of calcium hypochlorite, sodium hydrogen sulfate, starch, and sodium carbonate, when compressed, caused the materials to incandescence, followed by explosion, [Ind. Eng. Chem., 1937, 15, 282].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Sodium hydrogensulphate in the storage compatibility matrix →
10 · Questions
Sodium hydrogensulphate — frequently asked questions
What is the CAS number of Sodium hydrogensulphate?
The CAS number of Sodium hydrogensulphate is 7681-38-1. Its EC number is 231-665-7.
What is the chemical formula of Sodium hydrogensulphate?
The molecular formula of Sodium hydrogensulphate is HNaO4S and its molecular weight is 120.06 g/mol.
What does a Sodium hydrogensulphate label have to show?
Under CLP Annex VI the label for Sodium hydrogensulphate carries the pictogram Corrosion and the signal word is Danger.
Is Sodium hydrogensulphate flammable?
CLP Annex VI assigns Sodium hydrogensulphate no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Sodium hydrogensulphate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Sodium hydrogensulphate. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of Sodium hydrogensulphate?
The melting point reported for Sodium hydrogensulphate is 315 °C (599 °F) (Haz-Map).
Nearby
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