Substance profile
DNOC (ISO)
DNOC (ISO) is yellow prisms or needles from alcohol and is odorless.
01 · Identification
What DNOC (ISO) is
DNOC (ISO) is yellow prisms or needles from alcohol and is odorless. Its molecular formula is C7H6N2O5 and its molecular weight is 198.13 g/mol. It boils at 312 °C, melts at 86 °C.
Under the GHS it carries the signal word Danger. It is classed as hazardous Air Pollutants (HAPs).
Other names for DNOC (ISO)
- 4,6-dinitro-o-cresol
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 |
|---|---|
| H341 | Suspected of causing genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H310 | Fatal in contact with skin. |
| H330 | Fatal if inhaled. |
| H300 | Fatal if swallowed. |
| H315 | Causes skin irritation. |
| H318 | Causes serious eye damage. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Supplemental EU statements: EUH044
Precautionary statements: P201, P260, P261, P264, P270, P271, P272, P273, P280, P301, P302, P304, P305, P308, P310, P313, P330, P332, P333, P338, P352, P391, P501
03 · Physical and chemical properties
DNOC (ISO) 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 | 312 °C (593.6 °F) | HSDB | |
| 312.22 °C (594 °F) | at 760 mmHg | CAMEO | |
| 220 °C (428 °F) | at 760 mmHg | DOE PAC | |
| Melting point | 86 °C (186.8 °F) | HSDB | |
| 87.78 °C (190 °F) | CAMEO | ||
| 86.5 °C (187.7 °F) | DOE PAC | ||
| Density | 1.58 g/cm³ | at 20 °C | HSDB |
| 1.1 g/cm³ | at 20 °C, est | CAMEO | |
| Solubility | Slightly soluble in water | HSDB | |
| Slightly soluble in petroleum ether; soluble in ethanol, ether, acetone, chloroform | HSDB | ||
| In water, 198 mg/L at 20 °C | at 20 °C | HSDB | |
| Vapor pressure | 0.00005 mmHg | CAMEO | |
| 0.00012 mmHg | at 25 °C | HSDB | |
| Flash point | None (EPA, 1998) | CAMEO | |
| Lower explosive limit (LEL) | ...Pure DNOC, but not tech., is explosive when dry. | HSDB | |
| In dry conditions, salts tend to detonate, and so they are usually moistened with up to 10% water in order to reduce the risk of explosion. | DNOC salts | HSDB | |
| Vapor density | 6.84 (air = 1) | HSDB | |
| 6.82 (air = 1) | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling DNOC (ISO)
Storage conditions
Keep container tightly closed in a dry and well-ventilated place.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible materials: Strong oxidizing agents.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
Phenols do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has pKa = 9.88). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check DNOC (ISO) in the storage compatibility matrix →