PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Glycoluril; (Acetyleneurea) 496-46-8
4.00
3.00








Formula Synonyms
C2.H6.N2.O4
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
142.117 S
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
30 330 2000
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
5.2 57 340
Technical Basis
A review of available sources identified no acute toxicity data or exposure limits for this chemical. Reported GHS health hazard rating (H302, Category 4) indicate a mid- to low-level health hazard, approximately equivalent to a range between HHR=2 and HHR=1 (Section 3.4.5, TEEL-3=790 mg/m3 and TEEL-3=7900 mg/m3, respectively). Considering this, the PNOS TLV-TWA was selected as the TEEL-1 basis (PNOS, Section 3.5.2). TEEL-3 and TEEL-2 values were derived according to Table 3.5. The TEEL-3 is within the range indicated by GHS health hazard ratings.  
• PAC-1 = TEEL-1 = TLV-TWA (PNOS, 10mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6 
This review generated PAC values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/62347
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