Substance profile
Tricresyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-)
Tricresyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-) is a colorless or pale yellow liquid and is odorless.
01 · Identification
What Tricresyl phosphate (o-o-o… is
Tricresyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-) is a colorless or pale yellow liquid and is odorless. It boils at 410 °C, melts at 11 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Tricresyl phosphate (o-o-o… identifiers and molecular data
Tricresyl phosphate (o-o-o… CAS number and EC number
Other names for Tricresyl phosphate (o-o-o…
- tritolyl phosphate (o-o-o-, o-o-m-, o-o-p-, o-m-m-, o-m-p-, o-p-p-)
03 · GHS classification
Tricresyl phosphate (o-o-o… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Tricresyl phosphate (o-o-o… pictograms and signal word
Tricresyl phosphate (o-o-o… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 1 | H370 | GHS08 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
Tricresyl phosphate (o-o-o… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H370 | Causes damage to organs <or state all organs affected, if known> <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Tricresyl phosphate…. 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 Tricresyl phosphate…
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 Tricresyl phosphate… 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
Tricresyl phosphate (o-o-o… precautionary statements
CLP Annex VI assigns 7 precautionary statements to Tricresyl phosphate…. 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.
Disposal
What has to happen to the contents and the empty container.
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
Tricresyl phosphate (o-o-o… 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 | трикрезилов фосфат ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) тритолилов фосфат ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Spanish español | Fosfato de tricresilo ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) fosfato de tritolilo ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Czech čeština | trikresyl-fosfát ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolyl-fosfát ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Danish dansk | tricresylphosphater ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolylphosphater ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| German Deutsch | Trikresylphosphat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) Tritolylphosphat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Estonian eesti | trikresüülfosfaat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolüülfosfaat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Greek ελληνικά | φωσφορικός τρικρεσυλεστέρας ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) φωσφορικός τριτολυλεστέρας ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| English English | tricresyl phosphate ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolyl phosphate ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| French français | phosphate de tricrésyle ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) phosphate de tritolyle ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Croatian hrvatski | trikrezil-fosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolil-fosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Italian italiano | tricresilfosfato ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolilfosfato ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Latvian latviešu | trikrezilfosfāts ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolilfosfāts ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Lithuanian lietuvių | trikrezilfosfatas ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolilfosfatas ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Hungarian magyar | trikrezil-foszfát ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolil-foszfát ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Maltese Malti | fosfat tat-trikresil ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) fosfat tat-tritolil ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Dutch Nederlands | tricresylfosfaat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p- ) tritolylfosfaat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p- ) |
| Polish polski | fosforan trikrezylu ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) fosforan(V) tritolilu ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Portuguese português | fosfato de tricresilo ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) fosfato de tritolilo ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Romanian română | fosfat de tricresil ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) fosfat de tritolil ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Slovak slovenčina | trikrezyl-fosfát ( o-,o-,o-; o-,o-,m-; o-,o-,p-; o- ,m-,m-; o-,m-,p-; o-,p-,p-) tritolyl-fosfát ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Slovenian slovenščina | trikrezil fosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolil fosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
| Finnish suomi | trikresyylifosfaatti tritolyylifosfaattio-o-o , o-o-m , o-o-p , o-m-m , o-m-p , o-p-p |
| Swedish svenska | trikresylfosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) tritolylfosfat ( o - o - o- , o - o - m- , o - o - p- , o - m - m- , o - m - p- , o - p - p-) |
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
Tricresyl phosphate (o-o-o… GHS label elements
Everything CLP Annex VI fixes for Tricresyl phosphate…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Tricresyl phosphate (o-o-o…
- Causes damage to organs <or state all organs affected, if known> <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- Toxic to aquatic life with long lasting effects.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- IF exposed or concerned:
- Call a POISON CENTER/doctor/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Tricresyl phosphate… in the GHS label constructor →
07 · Health hazards
Tricresyl phosphate (o-o-o… health hazards and exposure limits
Tricresyl phosphate (o-o-o… hazard summary
Ingested TOCP was the cause of ginger jake paralysis or jake leg, a form of organophosphate induced delayed neuropathy (OPIDN). The minimum paralytic dose in humans by ingestion is approximately 10 to 30 mg/kg. Reported adverse effects after occupational exposure include reduced plasma cholinesterase activity and peripheral neuropathy. No neurological abnormalities were found after careful examination of workers exposed over several months to hydraulic fluid containing 21% TOCP and air concentrations of 1.5 mg/m3. Toxicity depends on the concentration of ortho-configured components. It should be noted that TOCP does not produce typical symptoms such as those associated with acetylcholinesterase inhibition like those seen with phosphate esters such as parathion. [ACGIH] See Tricresyl phosphate (mixed isomers, Tri-m-cresyl phosphate, and Tri-p-cresyl phosphate.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Tricresyl phosphate (o-o-o… occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.1 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 0.1 mg/m³ | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 0.1 mg/m3 See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 0.1 mg/m³ | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 0.1 mg/m3 [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 40.0 [mg/m3] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | 40 mg/cu m | Hazardous Substances Data Bank (HSDB) |
| IDLH | 40 mg/m³ | Occupational Safety and Health Administration (OSHA) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Tricresyl phosphate (o-o-o… 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.
Tricresyl phosphate (o-o-o… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 410 °C (770 °F) | HSDB | |
| 410 °C (770 °F) | at 760 mmHg | DOE PAC | |
| 410 °C (770 °F) | approximate | HSDB |
Tricresyl phosphate (o-o-o… melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 11 °C (51.8 °F) | HSDB | |
| 11.11 °C (52 °F) | NIOSH |
Tricresyl phosphate (o-o-o… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.2 g/cm³ | NIOSH | |
| 1.1955 g/cm³ | at 20 °C | HSDB |
Tricresyl phosphate (o-o-o… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Sparingly soluble in water | HSDB | |
| Slightly soluble in alcohol; soluble in ether | HSDB | ||
| Very soluble in carbon tetrachloride, ethanol, ether, and toluene; soluble in acetic acid | HSDB |
Tricresyl phosphate (o-o-o… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.00000196 mmHg | at 25 °C | HSDB |
| 0.00002 mmHg | at 25 °C | NIOSH |
Tricresyl phosphate (o-o-o… flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 225 °C (437 °F) | Closed cup | HSDB |
| 225 °C (437 °F) | NIOSH |
Tricresyl phosphate (o-o-o… autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 385 °C (725 °F) | HSDB |
Tricresyl phosphate (o-o-o… lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Class IIIB Combustible Liquid: Fl.P. at or above 200 °F. | NIOSH |
Tricresyl phosphate (o-o-o… vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 12.7 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Tricresyl phosphate… 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.
Tricresyl phosphate (o-o-o… fire potential
SLIGHT, WHEN EXPOSED TO HEAT OR FLAME. SPONTANEOUS HEATING: NO.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Tricresyl phosphate (o-o-o… storage and handling
Tricresyl phosphate (o-o-o… safe storage
Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Tricresyl phosphate (o-o-o… storage conditions
Safe Storage: Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access.
Source: Hazardous Substances Data Bank (HSDB)
Tricresyl phosphate (o-o-o… incompatible materials
Oxidizers.
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Tricresyl phosphate… in the storage compatibility matrix →
11 · Transport
Tricresyl phosphate (o-o-o… UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
Tricresyl phosphate (o-o-o… under UN 2574 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| TRICRESYL PHOSPHATE with more than 3 % ortho isomer | 6.1 | T1 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 6.1 is “Toxic substances” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Tricresyl phosphate with more than 3 percent ortho isomer | 6.1 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 6.1 is “Poisonous materials” (49 CFR 173.2).
12 · Questions
Tricresyl phosphate (o-o-o… — frequently asked questions
What is the CAS number of Tricresyl phosphate (o-o-o…?
The CAS number of Tricresyl phosphate (o-o-o… is 78-30-8. Its EC number is 201-103-5.
What does a Tricresyl phosphate (o-o-o… label have to show?
Under CLP Annex VI the label for Tricresyl phosphate (o-o-o… carries the pictograms Health hazard and Environment and the signal word is Danger.
Is Tricresyl phosphate (o-o-o… flammable?
CLP Annex VI assigns Tricresyl phosphate (o-o-o… 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 225 °C (437 °F), Closed cup (HSDB).
Is Tricresyl phosphate (o-o-o… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Tricresyl phosphate (o-o-o…. 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 exposure limit for Tricresyl phosphate (o-o-o…?
The US occupational exposure limit reported for Tricresyl phosphate (o-o-o… is 0.1 [mg/m3] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Tricresyl phosphate (o-o-o…?
The boiling point reported for Tricresyl phosphate (o-o-o… is 410 °C (770 °F) (HSDB).
What is the melting point of Tricresyl phosphate (o-o-o…?
The melting point reported for Tricresyl phosphate (o-o-o… is 11 °C (51.8 °F) (HSDB).
How should Tricresyl phosphate (o-o-o… be stored?
Safe Storage: Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Tricresyl phosphate…
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