Label abbreviations descriptions

CYANOGEN†

Chemical Identification
CAS # 460-19-5
Formula

C₂N₂
Synonyms

carbon nitride; dicyan; dicyanogen; ethanedinitrile; oxalonitrile

Physical Properties
Physical description Colorless gas with a pungent, almond-like odor.
Boiling point -6°F Molecular weight 52.0
Freezing point/melting point -18°F Vapor pressure 5.1 atm at 70°F
Flash point Vapor density 1.82
Specific gravity 0.95 (liquid at -6°F) Ionization potential 13.57 eV
Lower explosive limit (LEL) 6.6% Upper explosive limit (UEL) 43%
NFPA health rating 4 NFPA fire rating 4
NFPA reactivity rating 1 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0800
Sampling group
Sampler/Sampling media XAD-2 tube (120/60 mg) coated with 10% 2-(hydroxymethyl)piperidine [SKC 226-118]
Sampling time*
Sampling volume (TWA)*

12 L
Sampling flow rate (TWA)*

0.2 L/min
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments GC-NPD
Method reference OSHA PV2104 (partially validated)
Notes
Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)

Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

10 ppm (Construction and Maritime industries only)

 REL-TWA

10 ppm (20 mg/m³)

 TLV-TWA PEL-TWA

10 ppm (20 mg/m³)
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C

5 ppm [2015]

 PEL-C
Skin notation

N

 Skin notation

N

 Skin notation

N

 Skin notation

N
Notes:

The OSHA PEL applies to Construction and Maritime Industries only. See 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards.

 Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 06/02/2022