PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Silver | 7440-22-4 |
11.00
3.11
3.10
3.02
|
||||||||||
| Formula | Synonyms | |||||||||||
| Ag | SILVER, 1520D, AG-C-GS, AG-CO, AG-E 350, AGC-A, ALGAEDYN, ARGENTUM, ASTROFLAKE 5, AX 10C, AY 6010, AY 6080, C 200, C 200 (METAL), C.I. 77870, C.I. 77820, CAREY LEA SILVER, D 25, D 25 (METAL), DEGUSSA 67, DEGUSSA 80, DOTITE XA 208, E 20, E 20 (METAL), FA 312, G 13, G 13 (METAL), HCF 38, JELCON SH 1, KS, KS (METAL), L 3, L 3 (ELEMENT), L-3, LS 500, METZ 25B, METZ 3000-1, METZ 56, MMC-SF 25, MMC-SF 53, PS 652, PUFF SILVER X 1200, QS 175, RT 1710S, RT 1710S-C1, SD, SD (METAL), SF 135, SFR-AG, SHELL SILVER, SILBEST TCG 1, SILCOAT AGC-A, SILCOAT AGC-B, SILCOAT AGC-GS, SILCOAT AGC-O, SILFLAKE 135, SILPOWDER 130, SILVER ATOM, SILVER ELEMENT, SILVER METAL, SILVER METAL: ARGENTUM, SPD 2, SPD 2 (ELEMENT), SPS 100, SR 999, TC 20E, TCG, TCG (METAL), TCG 1, TCG 7, TCG 7R, TECHNIC 299, TECHNIC 450, V 9, V 9 (ELEMENT) | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 107.87 | S | 961.78 | 2162 | 1010 | 10.5 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.30 | 3.3 | 20 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.068 | 0.75 | 4.5 |
Technical Basis
A review of available sources identified the following: TLV-TWA, IDLH, and animal toxicity data. Data sources were selected according to the hierarchy listed in Table 3.1. The effective IDLH (1990) was selected as the TEEL-3 due to its basis on an exposure value. The TEEL-2 was derived according to Table 3.5. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA x 3 (0.1 mg/m3)
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH, effective (1990, 20 mg/m3)
This review generated TEEL-3 and TEEL-2 values that are significantly more conservative than Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50, while the current basis is a more preferred source (IDLH > LD50). The current and Rev. 29A TEEL-1 method and values are consistent.
• TEEL-1 = TLV-TWA x 3 (0.1 mg/m3)
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH, effective (1990, 20 mg/m3)
This review generated TEEL-3 and TEEL-2 values that are significantly more conservative than Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50, while the current basis is a more preferred source (IDLH > LD50). The current and Rev. 29A TEEL-1 method and values are consistent.
References
https://www.cdc.gov/niosh/idlh/7440224.html
https://pubchem.ncbi.nlm.nih.gov/source/hsdb/5034
National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 23954, Silver. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Silver