PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Ceric ammonium sulfate 7637-03-8
15.01
11.01
15.02
10.00
3.11
Formula Synonyms
CeH20N4O16S4
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
600.5352 S
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.46 5 31
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
11 120 760
Technical Basis
No toxicity data were found for ceric ammonium sulfate. However, a similar compound including hydrates, ammonium cerium (IV) sulfate dihydrate (CASRN: 10378-47-9) has an HHR=2; thus, the HHR value was used as the basis to estimate a TEEL-3. TEEL-2 and TEEL-1 estimates were calculated from this TEEL-3 value, according to guidance in Table 3.5.
• TEEL-1: TEEL-2/11
• TEEL-2: TEEL-3/6
• TEEL-3: Estimated from HHR=2 (Rat oral LD50, 4000 mg/kg)
This review generated TEELs inconsistent with Rev. 29A. Based on the latest SDS revision data (June 2022) and conservatism, HHR=2 was chosen to calculate the TEELs, whereas Rev. 29A used an HHR=3 to calculate the TEELs. This resulted in values that are less conservative than those in Rev. 29A.
References
SDS: https://www.fishersci.com/store/msds?partNumber=AC206311000&productDescription=ammonium-cerium-sulfate-g&vendorId=VN00032119&keyword=true&countryCode=US&language=en
SDS: https://www.fishersci.com/store/msds?partNumber=AC206315000&productDescription=?AMMONIUM+CERIUM%28IV%29+SULFATE+DI&vendorId=VN00032119&countryCode=?US&language=en
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.