PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Ammonium oxalate; (Diammonium oxalate monohydrate) 6009-70-7 2449
15.01
11.01
15.02
4.07
4.08
11.00
7.00
3.09
4.11
Formula Synonyms
C2.H10.N2.O5. or (N.H4)2.C2.O4.H2.O AMMONIUM OXALATE, AMMONIUM OXALATE ((NH4)2C2O4) MONOHYDRATE, AMMONIUM OXALATE HYDRATE, AMMONIUM OXALATE MONOHYDRATE, DIAMMONIUM OXALATE, DIAMMONIUM OXALATE MONOHYDRATE, OXALATE D^AMMONIUM (DOT FRENCH), OXALATO DE AMONIO (DOT SPANISH), OXALIC ACID, DIAMMONIUM SALT, OXALIC ACID, DIAMMONIUM SALT, MONOHYDRATE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
142.11 S 1.5
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 ratings (H302 and H312, 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). 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/Ammonium-oxalate
PNOR/PNOS TLV-TWA: https://www.osha.gov/chemicaldata/801
Search Again
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.