1,5-NAPHTHENE DIISOCYANATE

Chemical Identification
Chemical Identification
CAS # 3173-72-6
Formula

C₁₀H₆(NCO)₂

Synonyms

1,5-diisocyanatonaphthalene; 1,5-naphthalene diisocyanate; 1,5-naphthalene ester of isocyanic acid; NDI

Physical Properties
Physical Properties
Physical description White to light-yellow, crystalline flakes.
Boiling point 505°F Molecular weight 210.2
Freezing point/melting point 261°F Vapor pressure 0.003 mmHg
Flash point 311°F 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
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) N119
Sampling group
Sampler/Sampling media Isocyanate Sampling Filter Kit - GFF (37 mm, open-faced) coated with 1 mg 1-(2-pyridyl)piperazine [SLTC103]
Sampling time*

60 min

Sampling volume (TWA)*

60 L

Sampling flow rate (TWA)*

1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments HPLC
Method reference OSHA PV2046 (partially validated)
Notes

Refrigerate filters until use. Sample open-faced!!

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.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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 REL-TWA

0.005 ppm (0.040 mg/m³)

TLV-TWA PEL-TWA
 

 

PEL-STEL REL-STEL TLV-STEL PEL-STEL
 

 

PEL-C REL-C

0.020 ppm (0.170 mg/m³) [10 minutes]

TLV-C PEL-C
 

 

Skin notation

NA

Skin notation

N

Skin notation

NA

Skin notation
 

NA

Notes:

Not established

Notes: Notes:

Not established

Notes:
 

Not established

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-3 Notes:
 

 

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - 1,5-Naphthalene diisocyanate

NIOSH: Pocket Guide to Chemical Hazards - Naphthalene diisocyanate

Literature References

 

 

Last Updated Date : 12/14/2020