The label indicates a chemical hazard. It indicates the severity of the chemical according to the NFPA (National Fire Protection Association) standard. The label is square. The diamond sign is divided into 4 sections, visible as four adjacent diamonds as shown in the picture, each of the smaller squares is divided into 4 colors with red at the top. Blue on the left Yellow on the right And white on the bottom of the square Which each color has a meaning As shown in the table.
Flammability can be divided into five levels: |
|
| 0 | Not combustible |
| 1 | The flash point is higher than 93 ° C. |
| 2 | Flash point below 93 ° C |
| 3 | Flash point below 38 ° C |
| 4 | Flash point below 22 ° C |
| blue | Effects of chemicals on health Can be divided into 5 levels: |
| 0 | Safe, not dangerous |
| 1 | Less harm can cause irritation. |
| 2 | Moderate danger Potentially dangerous If I take a breath |
| 3 | Highly hazardous, corrosive or toxic. Contact or inhalation should be avoided. |
| 4 | Fatal Special protective equipment is required. |
| Yellow | Reactivity Can be divided into 5 levels : |
| 0 | Not susceptible to reaction |
| 1 | May have reaction When exposed to heat |
| 2 | Sensitive to severe reactions |
| 3 | Heat or shock May cause an explosion |
| 4 | Explosion |
| White | Additional important information |
| It is strictly prohibited to contact with water. | |
| COR | Corrosive substances |
| OXY | Oxidizing substances |
| Radiation activated substances | |
| ACID | acid |
| ALK | Alkali substances |
