Substance profile
p-toluenesulphonic acid (containing a maximum of 5 % H2SO4)
p-toluenesulphonic acid (containing a maximum of 5 % H2SO4) is monoclinic leaflets or prisms.
01 · Identification
What p-toluenesulphonic acid… is
p-toluenesulphonic acid (containing a maximum of 5 % H2SO4) is monoclinic leaflets or prisms. It boils at 38 °C, melts at 38 °C.
Under the GHS it carries the signal word Warning. It is classed as corrosives.
02 · Identifiers
p-toluenesulphonic acid… identifiers and molecular data
p-toluenesulphonic acid… CAS number and EC number
p-toluenesulphonic acid… molecular formula and molecular weight
Other names for p-toluenesulphonic acid…
- p-toluenesulphonic acid (containing a maximum of 5 % H2SO4)
03 · GHS classification
p-toluenesulphonic acid… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
p-toluenesulphonic acid… pictograms and signal word
p-toluenesulphonic acid… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | GHS07 |
p-toluenesulphonic acid… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
This page lists only the codes assigned to p-toluenesulphonic acid…. 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 p-toluenesulphonic acid…
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 p-toluenesulphonic… 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
p-toluenesulphonic acid… precautionary statements
CLP Annex VI assigns 9 precautionary statements to p-toluenesulphonic acid…. 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
p-toluenesulphonic acid… 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 | p -толуенсулфонова киселина (съдържаща най-много 5 % H 2 SO 4 ) |
| Spanish español | Ácido p -toluenosulfonico (con un máximo del 5 % de H 2 SO 4 ) |
| Czech čeština | 4-methylbenzensulfonová kyselina, obsah H 2 SO 4 maximálně 5 % |
| Danish dansk | p -toluensulfonsyre (indeholdende højst 5 % H 2 SO 4 ) |
| German Deutsch | p -Toluolsulfonsäure (mit höchstens 5 % H 2 SO 4 ) |
| Estonian eesti | p -tolueensulfoonhape (mis sisaldab kuni 5 % H 2 SO 4 ) |
| Greek ελληνικά | p -τολουολοσουλφονικό οξύ (που περιέχει μέχρι 5 % H 2 SO 4 ) |
| English English | p -toluenesulphonic acid (containing a maximum of 5 % H 2 SO 4 ) |
| French français | acide p -toluènesulfonique (contenant au maximum 5 % de H 2 SO 4 ) |
| Croatian hrvatski | p -toluensulfonska kiselina (sadržava najviše 5 % H 2 SO 4 ) |
| Italian italiano | acido p -toluensolfonico (contenente non più del 5 % H2SO4) |
| Latvian latviešu | p -toluolsulfonskābe (satur ne vairāk kā 5 % H 2 SO 4 ) |
| Lithuanian lietuvių | p -toluensulfonrūgštis (su ne daugiau kaip 5 % H 2 SO 4 ) |
| Hungarian magyar | p -toluolszulfonsav (kénsav (H 2 SO 4 ) tartalom max. 5 %) |
| Maltese Malti | aċidu p -toluwenesulfoniku, (li fiha massimu ta’ 5 % H 2 SO 4 ) |
| Dutch Nederlands | p -tolueensulfonzuur (met ten hoogste 5 % H 2 SO 4 ) |
| Polish polski | kwas p-toluenosulfonowy (zawierający maksymalnie 5 % H 2 SO 4 ) kwas 4-metylobenzenosulfonowy (zawierający maksymalnie 5 % H 2 SO 4 ) |
| Portuguese português | ácido p -toluenossulfónico (≤5 % de H 2 SO 4 ) |
| Romanian română | acid p -toluensulfonic (conținând maximum 5% H 2 SO 4 ) |
| Slovak slovenčina | kyselina 4-metylbenzénsulfónová (s obsahom maximálne 5 % H 2 SO 4 ) |
| Slovenian slovenščina | p -toluensulfonska kislina (vsebuje največ 5 % H 2 SO 4 ) |
| Finnish suomi | p -tolueenisulfonihappo, joka sisältää ≤ 5 % rikkihappoa |
| Swedish svenska | p -toluensulfonsyra (innehållande högst 5 % H 2 SO 4 ) |
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
p-toluenesulphonic acid… GHS label elements
Everything CLP Annex VI fixes for p-toluenesulphonic acid…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
p-toluenesulphonic acid…
- May cause respiratory irritation.
- Causes skin irritation.
- Causes serious eye irritation.
- Wash … thoroughly after handling.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF ON SKIN:
- IF IN EYES:
- Get medical advice/attention.
- If skin irritation occurs:
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
- Wash with plenty of water/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open p-toluenesulphonic acid… in the GHS label constructor →
07 · Health hazards
p-toluenesulphonic acid… health hazards and exposure limits
p-toluenesulphonic acid… hazard summary
Corrosive to skin; [Quick CPC] High inhalation exposure of dust may cause pulmonary edema; [ICSC] A severe skin and eye irritant; [CHRIS] Absorbs moisture from air forming a highly acidic liquid; Commercial grades are aqueous solutions (minimum 65% with a maximum of 0.8% free sulfuric acid) and solids (90% and 95% pure); Highly irritating or corrosive to skin and eyes of rabbits; Not a skin sensitizer in guinea pig maximization test; [IUCLID] Causes severe burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; Harmful by ingestion and inhalation; [Integra MSDS]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
p-toluenesulphonic acid… 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.
p-toluenesulphonic acid… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 38 °C (100.4 °F) | HSDB | |
| 140 °C (284 °F) | at 20 mmHg (reduced pressure) | HSDB |
p-toluenesulphonic acid… melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 38 °C (100.4 °F) | METASTABLE FORM | HSDB |
| 106 °C (222.8 °F) | monohydrate | HSDB | |
| 105 °C (221 °F) | CAMEO |
p-toluenesulphonic acid… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.24 g/cm³ | ICSC | |
| 1.45 g/cm³ | at 25 °C | CAMEO |
p-toluenesulphonic acid… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | ABOUT 67 G/100 ML WATER; SOL IN ALCOHOL, ETHER | HSDB | |
| VERY SOL IN WATER | SODIUM SALT | HSDB | |
| Solubility in water, g/100ml at 25 °C: 67 (freely soluble) | at 25 °C | ICSC |
p-toluenesulphonic acid… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000027 mmHg | Haz-Map |
p-toluenesulphonic acid… flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 183.89 °C (363 °F) | HSDB | |
| 184 °C (363.2 °F) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
p-toluenesulphonic acid… fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
p-toluenesulphonic acid… fire potential
Ignites after considerable preheating.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
p-toluenesulphonic acid… storage and handling
p-toluenesulphonic acid… safe storage
Dry. Separated from strong bases and food and feedstuffs.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
p-toluenesulphonic acid… incompatible materials
Reacts with water.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check p-toluenesulphonic acid… in the storage compatibility matrix →
11 · Questions
p-toluenesulphonic acid… — frequently asked questions
What is the CAS number of p-toluenesulphonic acid…?
The CAS number of p-toluenesulphonic acid… is 104-15-4. Its EC number is 203-180-0.
What does a p-toluenesulphonic acid… label have to show?
Under CLP Annex VI the label for p-toluenesulphonic acid… carries the pictogram Exclamation mark and the signal word is Warning.
Is p-toluenesulphonic acid… flammable?
CLP Annex VI assigns p-toluenesulphonic acid… 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. The flash point reported for it is 183.89 °C (363 °F) (HSDB).
Is p-toluenesulphonic acid… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for p-toluenesulphonic acid…. 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 boiling point of p-toluenesulphonic acid…?
The boiling point reported for p-toluenesulphonic acid… is 38 °C (100.4 °F) (HSDB).
What is the melting point of p-toluenesulphonic acid…?
The melting point reported for p-toluenesulphonic acid… is 38 °C (100.4 °F), METASTABLE FORM (HSDB).
Nearby
Substances next to p-toluenesulphonic acid…
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