Label abbreviations descriptions

CYANIDES (as CN)†

Chemical Identification
CAS # 57-12-5 [cyanides]; 592-01-8 [calcium cyanide] ; 151-50-8 [potassium cyanide]; 143-33-9 [sodium cyanide]
Formula

varies
Synonyms

Synonyms vary between cyanide compounds.

Physical Properties
Physical description See specific cyanide compounds for individual properties
Boiling point Molecular weight varies
Freezing point/melting point Vapor pressure
Flash point Vapor density
Specific gravity Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0790
Sampling group
Sampler/Sampling media Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0], in series with midget-fritted glass bubbler (MFGB) containing 10 mL 0.1 N NaOH - Cyanide Sampling Solution [SLTC113SOL]
Sampling time*

120 min
Sampling volume (TWA)*

120 L
Sampling flow rate (TWA)*

1 L/min
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments ISE
Method reference OSHA ID-120 (fully validated)
Notes

Submit as a separate sample. If present, sulfide should be listed as an interference. Particulate cyanide is collected on the filter. HCN, if present, is collected in the midget fritted glass bubbler. (See HCN) Within 1 hour after the sample has been collected, transfer the filter to a clean screw cap vial containing 10 mL 0.1 N NaOH. OSHA staff pls contact SLTC at 801-233-5100 before sampling.
Special requirements

These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling.

* 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 Detector tube
Model/Type Dräger - Cyanide 2/a, 6728791
Sampling information
(see manufacturer instructions) 		10 strokes, approx 1-15 mg/m³ range, uncertainty 33-49%

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

5 mg/m³

 REL-TWA TLV-TWA PEL-TWA

5 mg/m³
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C

Cyanides (as Cn), except Hydrogen cyanide, 4.7 ppm (5 mg/m³) [10 minutes]

 TLV-C

5 mg/m³ [1991]

 PEL-C
Skin notation

Y

 Skin notation

N

 Skin notation

Y

 Skin notation

Y
Notes:

See 29 CFR 1910.1000 Table Z-1.

 Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

25 mg/m³ (as Cn)
Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 01/22/2024