PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chlormequat chloride; (Choline dichloride) | 999-81-5 | 2811 |
11.01
4.08
4.05
7.01
7.00
11.00
4.07
7.10
3.02
3.10
|
|||||||||
| Formula | Synonyms | |||||||||||
| C5H13Cl2N | CHLORMEQUAT CHLORIDE, (2-CHLOROETHYL)TRIMETHYLAMMONIUM CHLORIDE, (BETA-CHLOROETHYL)TRIMETHYLAMMONIUM CHLORIDE, 2-CHLORO-N,N,N-TRIMETHYLETHANAMINIUM CHLORIDE, 60-CS-16, 60CS16, AC 38555, AMMONIUM, (2-CHLOROETHYL)TRIMETHYL-, CHLORIDE, ANTYWYLEGACZ, BARLEYQUAT B, BERCEMA CCC, BETA-CHLOROETHYLTRIMETHYLAMMONIUM CHLORIDE, CCC, CCC PLANT GROWTH REGULANT, CE CE CE, CHLORCHOLINE CHLORIDE, CHLORMEQUAT, CHLOROCHOLINE CHLORIDE, CHOLINE DICHLORIDE, CYCLOCEL, CYCOCEL, CYCOCEL EXTRA, CYCOCEL-EXTRA, CYCOGAN, CYCOGAN EXTRA, CYOCEL, EI 38,555, ETHANAMINIUM, 2-CHLORO- N,N,N-TRIMETHYL-, CHLORIDE, HALLOWEEN, HICO CCC, HORMOCEL-2CCC, INCRECEL, LIHOCIN, MICROCIL, NCI-C02960, NEW ^5C' CYCOCEL, NEW 5C CYCOCEL, PREMIX, RETACEL, STABILAN, TRIMETHYL-BETA- CHLOROETHYLAMMONIUM CHLORIDE, TRIMETHYL-BETA-CHLOROETHYLAMMONIUM CHLORIDE, TUR, WR 62, ZAR | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 158.09 | S | 0.000000075 | 20 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.64 | 7.0 | 21 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.099 | 1.1 | 3.2 |
Technical Basis
A review of available sources identified an LOC and acute toxicity data (LC50, LDLo, LD50) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. The sex of the human subjects could not be confirmed and the source of the LC50 could not be verified; therefore, these were not selected for TEEL development (Section 3.3.1). Instead, a dog oral LD50 was selected as the TEEL-3 basis. The LOC was selected as the TEEL-2. The TEEL-1 value was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC
• TEEL-3 = Dog oral LD50 (50 mg/kg)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A and a TEEL-3 value inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50, while the current TEEL-3 basis is a dog oral LD50, a more preferred species (Section 3.3.2).
• TEEL-1 = TEEL-2/11
• TEEL-2 = LOC
• TEEL-3 = Dog oral LD50 (50 mg/kg)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A and a TEEL-3 value inconsistent with Rev. 29A. The Rev. 29A TEEL-3 basis was a rat oral LD50, while the current TEEL-3 basis is a dog oral LD50, a more preferred species (Section 3.3.2).
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Chlormequat-chloride
LOC. Appendix C, pg. C-3. https://www.epa.gov/sites/default/files/2015-09/documents/technical_guidance_for_hazard_analysis.pdf
Archiv fuer Experimentelle Veterinaermedizin., 24(1049), 1970 [PMID:5499414]. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Chlormequat-chloride