[ LR-01 ] 1-AMINO-2-NAPHTHOL-4-SULFONIC ACID                                                CAS-No. 116-63-2

Chemical Formula

C₁₀H₉NO₄S

Molecular Weight

239.25

Content( C₁₀H₉NO₄S)(Confirm Nitrogen Method)

≥ 97%

Sensitivity to phosphate

Pass

Solution clarity Inferior sodium sulfate

Pass

Sulfated ash

≤ 0.2%

Sulfate(SO₄)

≤ 0.1%

[LR-02] CHLOROPHOSPHONAZO Ι TRIHYDRATE

Chemical Formula

C₁₆H₁₁ClN₂NaO₁₁PS₂.3 H₂O

Molecular Weight

614.60

Content (Spectrophotometric)

≥ 80%

Sensitive test

Pass

Solution clarity (Water)

Pass

Sulfated ash

12 – 18 %

[LR-03] DIETHYLDITHIOCARBAMIC ACID SILVER SALT                                        CAS-No. 1470-61-7

Chemical Formula

C₅H₁₀Ag NS₂

Molecular Weight

256.15

Content

≥ 99.0%

Sensitivity to arsenic

Conforms

Soluble in water

≤ 0.1%

Loss on drying

≤ 0.1%

Nitrate( NO₃)

≤ 0.01%

[LR-04] DIETHYLDITHIOCARBAMIC ACID SODIUM SALT TRIHYDRATE          CAS-No. 20624-25-3

Chemical Formula

C₅H₁₀NNaS₂· 3H₂O

Molecular Weight

225.31

Content (C₂H₅ )₂NCS₂Na · 3H₂O

≥ 99.0%

Sensitivity(As reagent of copper)

conforms

Clarity and color of solution

conforms

Sulfated ash

30.5 – 32.5%

[LR-05 ] DIMETHYLGLYOXIME                                                                                         CAS-No. 95-45-4

Chemical Formula

C₄H₈N₂O₂

Molecular Weight

116.12

Content ( C₄H₈N₂O₂)

≥ 98.0%

Melting point

239.0 – 241.0°C

Solution Clarity (Ethanol)

Conforms

Sulfated ash

≤ 0.1%

Loss on drying

≤ 0.3%

[LR-06] DIPHENYLAMINE-4-SULFONIC ACID SODIUM SALT                              CAS-No. 6152-67-6

[LR-07] 4-(DIMETHYL AMINO)BENZALDEHYDE                                                          CAS-No.100-10-7

Chemical Formula

C₉H₁₁NO

Molecular Weight

149.19

Melting point

73–75 °C

Sensitivity to Foliage alkali

Conforms

Solution clarity (Dilute HCl)

Conforms

Solution Clarity (Ethanol)

Conforms

Sulfated ash

≤ 0.1 %

[LR-08] sym - DIPHENYLCARBAZONE                                                                        CAS-No. 538-62-5

Chemical Formula

C₁₃H₁₂N₄O

Molecular Weight

240.26

Appearance

Conforms

Melting range

149–155 °C (Decomposition)

Substances insoluble in ethanol

Conforms

Sulfated ash

≤ 0.1%

Suitability for mercury determination

Passed test