Substance profile
4,4'-bi-o-toluidine
4,4'-bi-o-toluidine is colorless; in technical grades also brownish flakes.
01 · Identification
What 4,4'-bi-o-toluidine is
4,4'-bi-o-toluidine is colorless; in technical grades also brownish flakes. Its molecular formula is C14H16N2 and its molecular weight is 212.29 g/mol. It boils at 300 °C, melts at 129 °C.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H302 | Harmful if swallowed. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P201, P270, P273, P280, P301, P308, P312, P313, P330, P391, P501
This page lists only the codes assigned to 4,4'-bi-o-toluidine. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
4,4'-bi-o-toluidine 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.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 300 °C (572 °F) | HSDB | |
| 200 °C (392 °F) | at 760 mmHg | CAMEO | |
| Melting point | 128.89 °C (264 °F) | HSDB | |
| Density | 1.234 g/cm³ | HSDB | |
| 1 g/cm³ | CAMEO | ||
| 1.2 g/cm³ | ICSC | ||
| Solubility | Soluble in alcohol, ether, dilute acids | HSDB | |
| 0.1% | NIOSH | ||
| In water, 1,300 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.000001 mmHg | OSHA | |
| Flash point | 244 °C (471.2 °F) | ICSC | |
| 243.89 °C (471 °F) | OSHA | ||
| 137 °C (278.6 °F) | Haz-Map | ||
| Autoignition temperature | 526 °C (978.8 °F) | ICSC | |
| Lower explosive limit (LEL) | Combustible Solid | NIOSH |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling 4,4'-bi-o-toluidine
Storage conditions
Separated from strong oxidants and food and feedstuffs. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Strong oxidizers.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
3,3'-DIMETHYLBENZIDINE is sensitive to exposure to light. May be sensitive to prolonged exposure to air. A weak base that forms salts with hydrochloric acid or sulfuric acid. It can be acetylated. Incompatible with strong agents (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 4,4'-bi-o-toluidine in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for 4,4'-bi-o-toluidine
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 4,4'-bi-o-toluidine 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.
Nearby
Substances next to 4,4'-bi-o-toluidine
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