Registration Dossier
Registration Dossier
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EC number: 231-598-3 | CAS number: 7647-14-5
Toxicological Summary
Administrative data
Workers - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 2 068.62 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 12
- Modified dose descriptor starting point:
- LOAEC
Acute/short term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 2 068.62 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 12
- Modified dose descriptor starting point:
- LOAEC
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Workers - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 295.52 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 12
- Modified dose descriptor starting point:
- LOAEL
Acute/short term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 295.52 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 12
- Modified dose descriptor starting point:
- LOAEL
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Workers - Hazard for the eyes
Additional information - workers
DNELS for worker population were derived from the most sensitive endpoint, a chronic toxicity study in which rats received 4% NaCl in the diet for 2 years. High blood pressure was the key effect noted at the single dose level, and based on body weight and feed consumption data from the study, the equivalent dose level was calculated to be 2533 mg/kg/day. This was considered the LOEL. ECETOC-derived assessment factors were used in the calculations.
Historically, sodium chloride (as a major ingredient in edible salt) has been commonly used in cooking and as a condiment and food preservative. Sodium chloride is categorised under GRAS (Generally Recognised as Safe) by the FDA (U.S. Food and Drug Administration) and the average daily levels of sodium intake for adults range from 2 to 5 grams. The Recommended Daily Intake (RDI) was 17 mg/kg, while the Acceptable Daily Intake (ADI) was 180 mg/kg of sodium expressed as sodium chloride. A technical report by WHO and the Food and Agriculture Organization (FAO) recommended the consumption of less than 5 grams sodium chloride (or 2 grams sodium) per day as a population nutrient intake goal, while ensuring that the salt is iodized (WHO, 2003).
General Population - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 443.28 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEC
Acute/short term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 443.28 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEC
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
General Population - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 126.65 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEL
Acute/short term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 126.65 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEL
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
General Population - Hazard via oral route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 126.65 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEL
Acute/short term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 126.65 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
DNEL related information
- Overall assessment factor (AF):
- 20
- Modified dose descriptor starting point:
- LOAEL
General Population - Hazard for the eyes
Additional information - General Population
DNELS for general population were derived from the most sensitive endpoint, a chronic toxicity study in which rats received 4% NaCl in the diet for 2 years. High blood pressure was the key effect noted at the single dose level, and based on body weight and feed consumption data from the study, the equivalent dose level was calculated to be 2533 mg/kg/day. This was considered the LOEL.
ECETOC-derived assessment factors were used in the calculations.
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