Description

For the parameter selected in the relation, shows its maximum permissible value.

Number	Parameter	CAS	Unity	VMP¹
1	Aluminum	7429-90-5	mg/L	0.2
2	Ammonia (as N)	7664-41-7	mg/L	1,2
3	Chloride	16887-00-6	mg/L	250
4	Apparent Color²		uH	15
5	1,2 dichlorobenzene	95-50-1	mg/L	0.001
6	1,4 dichlorobenzene	106-46-7	mg/L	0.0003
7	Total hardness		mg/L	300
8	Iron	7439-89-6	mg/L	0.3
9	Taste and odor		Intensity	6
10	Manganese	7439-96-5	mg/L	0.1
11	Monochlorobenzene	108-90-7	mg/L	0.02
12	Sodium	7440-23-5	mg/L	200
13	Total dissolved solids		mg/L	500
14	Sulfate	14808-79-8	mg/L	250
15	Hydrogen sulfide	06/04/7783	mg/L	0.05
16	Turbidity³		uT	5
17	Zinc	7440-66-6	mg/L	5

Observation

1: Maximum value allowed;

2: Hazen Unit (mg Pt-Co/L);

3: Turbidity unit.

CAS

The CAS number or CAS registry number for a chemical compound, polymer, biological sequence, and alloy is a number with a unique record in the database of the Chemical Abstracts Service, a division of the Chemical American Society .

The Chemical Abstracts Service assigns these numbers to each chemical that is described in the literature. Furthermore, CAS maintains and markets a database of these substances: the CAS Registry (according to Wikipedia. Accessed on 06/05/2023).