Nitric Oxide (NO)

CAS Number: 10102-43-9
Nitric oxide (NO) is a colorless gas produced during combustion processes, including internal combustion engines, welding, and power generation. It is also generated in chemical manufacturing and is used in the production of nitric acid. In the atmosphere, NO rapidly oxidizes to nitrogen dioxide (NO₂), which is more acutely toxic. Nitric oxide itself can cause respiratory irritation, and at high concentrations, methemoglobinemia — a condition that reduces the blood's ability to carry oxygen. Occupational exposure is most common in welding operations, confined spaces near combustion sources, and the chemical industry.

Nitric oxide (NO) monitoring helps teams manage nitrogen oxide exposure risks in combustion and industrial settings, including welding areas, engine exhaust environments, and facilities handling nitric acid. Rent nitric oxide detection equipment from RAECO Rents to support spot checks and continuous monitoring in enclosed or poorly ventilated work zones where conditions can change quickly. Rental instruments are bump tested and span calibrated before each rental.

Regulatory Exposure Limits

As of March 09, 2026

OSHA PEL
TWA: 25 ppm (30 mg/m³)
STEL: N/A
C: N/A
NIOSH REL
TWA: 25 ppm (30 mg/m³)
STEL: N/A
C: N/A
ACGIH TLV
TWA: 25 ppm [1992]
STEL: N/A
C: N/A
Showing 1 - 8 of 8 products

Need Help Choosing the Right Equipment?

Our team is ready to help you find the right equipment for your needs.