Note: Ingredients listed on restricted chemical lists
EC/CAS
7757-83-7
Name of the chemical
Sodium sulphite
Concentration
20-30%
EC/CAS
7631-86-9
Name of the chemical
Silver adsorbed on silicon dioxide
Concentration
<1%
General Information
Version
5
Revision date
2026-07-07
Product name
UniVer 3 Hardness Reagent
1.2.1 Relevant identified uses
Hardness determination, Water Analysis
1.2.2. Uses advised against
Consumer use
Emergency telephone
+1(303) 623-5716 - 24
Icons in SDS
Company Information
company name
Hach Company
GHS Information
Signal word
Warning
Hazard Codes
Hazard statements (CLP)
H319, H332, H335
Hazard statements
Code
Statements
H319
Causes serious eye irritation
Section 2
SECTION 2: Hazards identification
Classification of the substance or mixture Acute toxicity - Inhalation (Dusts/Mists) Category 4 Serious eye damage/eye irritation Category 2A Category 3 Target organ effects: Respiratory irritation Hazards not otherwise classified (HNOC) Not applicable
Signal word
Warning
Hazard statements
H319 - Causes serious eye irritation H332 - Harmful if inhaled
Precautionary statements
P261 - Avoid breathing dust, fume, gas, mist, vapors and spray P271 - Use only outdoors or in a well-ventilated area P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P312 - Call a POISON CENTER, doctor or physician if you feel unwell P280 - Wear protective gloves, protective clothing, eye protection and face protection P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P337 + P313 - If eye irritation persists: Get medical advice and attention
Other hazards
Known May be harmful if swallowed. May be harmful in contact with skin. Causes mild skin irritation. Harmful to aquatic life.
2.1 Classification of the substance or mixture
Acute toxicity - Inhalation (Dusts/Mists) Category 4 Serious eye damage/eye irritation Category 2A Category 3 Target organ effects: Respiratory irritation. Hazards not otherwise classified (HNOC) Not applicable.
