SKMB offers a portfolio of sulfuric acid-based products, including electrolyte products in various grades:
Electrolyte Grade Specifications
| Grade | Turbidity | Fe | Pb | Cl | As |
|---|---|---|---|---|---|
| Battery Grade | ≤ 1 NTU | ≤ 1 ppm | ≤ 1 ppm | ≤ 1 ppm | ≤ 0.1 ppm |
| Clear Acid (mid grade) | ≤ 35 NTU | ≤ 35 ppm | ≤ 9 ppm | ≤ 3 ppm | ≤ 0.2 ppm |
| SNI Grade | ≤ 60 NTU | ≤ 40 ppm | ≤ 9 ppm | ≤ 5 ppm | ≤ 0.2 ppm |
The specifications above are a reference. Final applicability follows each customer's specifications and QA requirements.
Specific Gravity ↔ H₂SO₄ Concentration Reference
Reference relationship between specific gravity (g/cc) and H₂SO₄ concentration (%) at standard temperature.
| Specific Gravity (g/cc) | H₂SO₄ Concentration (%) |
|---|---|
| 1.005 | 1.0 |
| 1.010 | 1.7 |
| 1.015 | 2.5 |
| 1.020 | 3.2 |
| 1.025 | 4.0 |
| 1.030 | 4.7 |
| 1.035 | 5.5 |
| 1.040 | 6.2 |
| 1.045 | 7.0 |
| 1.050 | 7.7 |
| 1.055 | 8.4 |
| 1.060 | 9.1 |
| 1.065 | 9.8 |
| 1.070 | 10.6 |
| 1.075 | 11.3 |
| 1.080 | 12.0 |
| 1.085 | 12.7 |
| 1.090 | 13.4 |
| 1.095 | 14.0 |
| 1.100 | 14.7 |
| 1.105 | 15.4 |
| 1.110 | 16.1 |
| 1.115 | 16.8 |
| 1.120 | 17.4 |
| 1.125 | 18.1 |
| 1.130 | 18.8 |
| 1.135 | 19.4 |
| 1.140 | 20.1 |
| 1.145 | 20.7 |
| 1.150 | 21.4 |
| 1.155 | 22.0 |
| 1.160 | 22.7 |
| 1.165 | 23.3 |
| 1.170 | 24.0 |
| 1.175 | 24.6 |
| 1.180 | 25.2 |
| 1.185 | 25.8 |
| 1.190 | 26.5 |
| 1.195 | 27.1 |
| 1.200 | 27.7 |
| 1.205 | 28.3 |
| 1.210 | 29.0 |
| Specific Gravity (g/cc) | H₂SO₄ Concentration (%) |
|---|---|
| 1.215 | 29.6 |
| 1.220 | 30.2 |
| 1.225 | 30.8 |
| 1.230 | 31.4 |
| 1.235 | 32.0 |
| 1.240 | 32.6 |
| 1.245 | 33.2 |
| 1.250 | 33.8 |
| 1.255 | 34.4 |
| 1.260 | 35.0 |
| 1.265 | 35.6 |
| 1.270 | 36.2 |
| 1.275 | 36.8 |
| 1.280 | 37.4 |
| 1.285 | 38.0 |
| 1.290 | 38.5 |
| 1.295 | 39.1 |
| 1.300 | 39.7 |
| 1.305 | 40.3 |
| 1.310 | 40.8 |
| 1.315 | 41.4 |
| 1.320 | 42.0 |
| 1.325 | 42.5 |
| 1.330 | 43.1 |
| 1.335 | 43.6 |
| 1.340 | 44.2 |
| 1.345 | 44.7 |
| 1.350 | 45.3 |
| 1.355 | 45.8 |
| 1.360 | 46.3 |
| 1.365 | 46.9 |
| 1.370 | 47.4 |
| 1.375 | 47.9 |
| 1.380 | 48.5 |
| 1.385 | 49.0 |
| 1.390 | 49.5 |
| 1.395 | 50.0 |
| 1.400 | 50.5 |
| 1.405 | 51.0 |
| 1.410 | 51.5 |
| 1.415 | 52.0 |
| 1.420 | 52.5 |
| Specific Gravity (g/cc) | H₂SO₄ Concentration (%) |
|---|---|
| 1.425 | 53.0 |
| 1.430 | 53.5 |
| 1.435 | 54.0 |
| 1.440 | 54.5 |
| 1.445 | 55.0 |
| 1.450 | 55.5 |
| 1.455 | 55.9 |
| 1.460 | 56.4 |
| 1.465 | 56.9 |
| 1.470 | 57.4 |
| 1.475 | 57.8 |
| 1.480 | 58.3 |
| 1.485 | 58.8 |
| 1.490 | 59.2 |
| 1.495 | 59.7 |
| 1.500 | 60.2 |
| 1.505 | 60.6 |
| 1.510 | 61.1 |
| 1.515 | 61.5 |
| 1.520 | 62.0 |
| 1.525 | 62.5 |
| 1.530 | 62.9 |
| 1.535 | 63.4 |
| 1.540 | 63.8 |
| 1.545 | 64.3 |
| 1.550 | 64.7 |
| 1.555 | 65.2 |
| 1.560 | 65.6 |
| 1.565 | 66.0 |
| 1.570 | 66.5 |
| 1.575 | 66.9 |
| 1.580 | 67.4 |
| 1.585 | 67.8 |
| 1.590 | 68.2 |
| 1.595 | 68.7 |
| 1.600 | 69.1 |
| 1.605 | 69.5 |
| 1.610 | 70.0 |
| 1.615 | 70.4 |
| 1.620 | 70.8 |
| 1.625 | 71.3 |
| 1.630 | 71.7 |
| Specific Gravity (g/cc) | H₂SO₄ Concentration (%) |
|---|---|
| 1.635 | 72.1 |
| 1.640 | 72.5 |
| 1.645 | 73.0 |
| 1.650 | 73.4 |
| 1.655 | 73.8 |
| 1.660 | 74.2 |
| 1.665 | 74.6 |
| 1.670 | 75.1 |
| 1.675 | 75.5 |
| 1.680 | 75.9 |
| 1.685 | 76.3 |
| 1.690 | 76.8 |
| 1.695 | 77.2 |
| 1.700 | 77.6 |
| 1.705 | 78.1 |
| 1.710 | 78.5 |
| 1.715 | 78.9 |
| 1.720 | 79.4 |
| 1.725 | 79.8 |
| 1.730 | 80.3 |
| 1.735 | 80.7 |
| 1.740 | 81.2 |
| 1.745 | 81.6 |
| 1.750 | 82.1 |
| 1.755 | 82.5 |
| 1.760 | 83.1 |
| 1.765 | 83.5 |
| 1.770 | 84.1 |
| 1.775 | 84.6 |
| 1.780 | 85.2 |
| 1.785 | 85.7 |
| 1.790 | 86.3 |
| 1.795 | 87.0 |
| 1.800 | 87.6 |
| 1.805 | 88.3 |
| 1.810 | 89.1 |
| 1.815 | 90.1 |
| 1.820 | 91.1 |
| 1.825 | 92.2 |
| 1.830 | 93.6 |
| 1.835 | 95.7 |
| 1.836 | 98.0 |
The specifications above are a reference. Final applicability follows each customer's specifications and QA requirements.
Battery-Grade Sulfuric Acid for the Battery Industry
SKMB produces sulfuric acid (H₂SO₄) and battery electrolyte in the Jatake Industrial Estate, Tangerang, Indonesia, for the battery industry and industrial processes. Each grade is controlled to measured turbidity and metal-impurity limits (Fe, Pb, Cl, As), while concentration and specific gravity are matched to the customer's specification.
Frequently Asked Questions
What is battery-grade sulfuric acid?
Battery-grade sulfuric acid (H₂SO₄) is sulfuric acid with very tight impurity limits for use as lead-acid battery electrolyte. SKMB's Battery grade is held to turbidity ≤ 1 NTU, Fe ≤ 1 ppm, Pb ≤ 1 ppm, Cl ≤ 1 ppm and As ≤ 0.1 ppm.
What is the difference between the Battery, Clear Acid and SNI grades?
They differ in purity limits. Battery grade has the tightest limits (e.g. Fe ≤ 1 ppm), Clear Acid sits in the middle (Fe ≤ 35 ppm), and the SNI grade follows the Indonesian national standard (Fe ≤ 40 ppm). Final suitability follows each customer's specification and QA requirements.
Which industries use SKMB sulfuric acid?
Mainly the automotive and industrial battery (accumulator) industry, industrial processes that need specification-based sulfuric acid, and industrial utilities such as demineralized water.
What concentrations and specific gravities are available?
Our reference table covers specific gravities from 1.005 to 1.836 g/cc (about 1% to 98% H₂SO₄). Concentration and specific gravity are matched to your specification — contact us to discuss your requirements.
Where is SKMB located?
Our office and plant are in the Jatake Industrial Estate, Jatiuwung, Tangerang, Banten 15135, Indonesia. We have produced sulfuric acid and its derivatives since 2011.
How do I order sulfuric acid from SKMB?
Use the Online Order page or contact our team. Pricing follows your company contract; once approved, you can track approval, production, and delivery from your account.
Need sulfuric acid matched to your specification?
Our team is ready to help — from spec discussion to delivery.