{
  "id": "science-ph-scale",
  "name": "pH Scale Reference Dataset & Chemical Properties",
  "category": "science",
  "source": null,
  "updated": "2026-01-05",
  "columns": [
    {
      "key": "substance",
      "label": "Substance",
      "type": "string"
    },
    {
      "key": "ph",
      "label": "pH Value",
      "type": "number"
    },
    {
      "key": "h_concentration",
      "label": "[H⁺] Concentration (mol/L)",
      "type": "string"
    },
    {
      "key": "category",
      "label": "Category",
      "type": "string"
    },
    {
      "key": "nature",
      "label": "Nature",
      "type": "string"
    }
  ],
  "rows": [
    {
      "substance": "Battery Acid (H₂SO₄)",
      "ph": 0,
      "h_concentration": "1",
      "category": "Strong Acid",
      "nature": "Highly Corrosive"
    },
    {
      "substance": "Hydrochloric Acid (HCl)",
      "ph": 0,
      "h_concentration": "1",
      "category": "Strong Acid",
      "nature": "Highly Corrosive"
    },
    {
      "substance": "Stomach Acid",
      "ph": 1,
      "h_concentration": "10⁻¹",
      "category": "Strong Acid",
      "nature": "Corrosive"
    },
    {
      "substance": "Lemon Juice",
      "ph": 2,
      "h_concentration": "10⁻²",
      "category": "Strong Acid",
      "nature": "Acidic"
    },
    {
      "substance": "Vinegar",
      "ph": 2.5,
      "h_concentration": "3.2×10⁻³",
      "category": "Strong Acid",
      "nature": "Acidic"
    },
    {
      "substance": "Coca-Cola",
      "ph": 2.5,
      "h_concentration": "3.2×10⁻³",
      "category": "Strong Acid",
      "nature": "Acidic"
    },
    {
      "substance": "Orange Juice",
      "ph": 3.5,
      "h_concentration": "3.2×10⁻⁴",
      "category": "Weak Acid",
      "nature": "Mildly Acidic"
    },
    {
      "substance": "Tomato Juice",
      "ph": 4,
      "h_concentration": "10⁻⁴",
      "category": "Weak Acid",
      "nature": "Mildly Acidic"
    },
    {
      "substance": "Beer",
      "ph": 4.5,
      "h_concentration": "3.2×10⁻⁵",
      "category": "Weak Acid",
      "nature": "Mildly Acidic"
    },
    {
      "substance": "Coffee (Black)",
      "ph": 5,
      "h_concentration": "10⁻⁵",
      "category": "Weak Acid",
      "nature": "Mildly Acidic"
    },
    {
      "substance": "Acid Rain",
      "ph": 5,
      "h_concentration": "10⁻⁵",
      "category": "Weak Acid",
      "nature": "Environmental"
    },
    {
      "substance": "Bananas",
      "ph": 5.5,
      "h_concentration": "3.2×10⁻⁶",
      "category": "Weak Acid",
      "nature": "Mildly Acidic"
    },
    {
      "substance": "Normal Rain",
      "ph": 5.6,
      "h_concentration": "2.5×10⁻⁶",
      "category": "Weak Acid",
      "nature": "Natural"
    },
    {
      "substance": "Milk",
      "ph": 6.5,
      "h_concentration": "3.2×10⁻⁷",
      "category": "Weak Acid",
      "nature": "Nearly Neutral"
    },
    {
      "substance": "Saliva",
      "ph": 6.8,
      "h_concentration": "1.6×10⁻⁷",
      "category": "Weak Acid",
      "nature": "Nearly Neutral"
    },
    {
      "substance": "Pure Water",
      "ph": 7,
      "h_concentration": "10⁻⁷",
      "category": "Neutral",
      "nature": "Neutral"
    },
    {
      "substance": "Blood",
      "ph": 7.4,
      "h_concentration": "4×10⁻⁸",
      "category": "Neutral",
      "nature": "Slightly Basic"
    },
    {
      "substance": "Egg Whites",
      "ph": 8,
      "h_concentration": "10⁻⁸",
      "category": "Weak Base",
      "nature": "Mildly Basic"
    },
    {
      "substance": "Sea Water",
      "ph": 8,
      "h_concentration": "10⁻⁸",
      "category": "Weak Base",
      "nature": "Mildly Basic"
    },
    {
      "substance": "Baking Soda (NaHCO₃)",
      "ph": 8.5,
      "h_concentration": "3.2×10⁻⁹",
      "category": "Weak Base",
      "nature": "Mildly Basic"
    },
    {
      "substance": "Toothpaste",
      "ph": 9,
      "h_concentration": "10⁻⁹",
      "category": "Weak Base",
      "nature": "Basic"
    },
    {
      "substance": "Milk of Magnesia",
      "ph": 10.5,
      "h_concentration": "3.2×10⁻¹¹",
      "category": "Weak Base",
      "nature": "Basic"
    },
    {
      "substance": "Ammonia (NH₃)",
      "ph": 11,
      "h_concentration": "10⁻¹¹",
      "category": "Moderate Base",
      "nature": "Caustic"
    },
    {
      "substance": "Soapy Water",
      "ph": 12,
      "h_concentration": "10⁻¹²",
      "category": "Strong Base",
      "nature": "Caustic"
    },
    {
      "substance": "Bleach (NaClO)",
      "ph": 12.5,
      "h_concentration": "3.2×10⁻¹³",
      "category": "Strong Base",
      "nature": "Corrosive"
    },
    {
      "substance": "Oven Cleaner",
      "ph": 13,
      "h_concentration": "10⁻¹³",
      "category": "Strong Base",
      "nature": "Highly Corrosive"
    },
    {
      "substance": "Drain Cleaner",
      "ph": 14,
      "h_concentration": "10⁻¹⁴",
      "category": "Strong Base",
      "nature": "Highly Corrosive"
    },
    {
      "substance": "Sodium Hydroxide (NaOH)",
      "ph": 14,
      "h_concentration": "10⁻¹⁴",
      "category": "Strong Base",
      "nature": "Highly Corrosive"
    },
    {
      "substance": "Healthy Soil",
      "ph": 6.5,
      "h_concentration": "3.2×10⁻⁷",
      "category": "Environmental",
      "nature": "Optimal for most plants"
    },
    {
      "substance": "Swimming Pool (Ideal)",
      "ph": 7.4,
      "h_concentration": "4×10⁻⁸",
      "category": "Environmental",
      "nature": "Safe for swimming"
    },
    {
      "substance": "Aquarium (Freshwater)",
      "ph": 7,
      "h_concentration": "10⁻⁷",
      "category": "Environmental",
      "nature": "Optimal for fish"
    },
    {
      "substance": "Human Skin",
      "ph": 5.5,
      "h_concentration": "3.2×10⁻⁶",
      "category": "Biological",
      "nature": "Acid mantle"
    },
    {
      "substance": "Human Urine",
      "ph": 6,
      "h_concentration": "10⁻⁶",
      "category": "Biological",
      "nature": "Variable (4.5-8)"
    }
  ],
  "meta": {
    "seo_title": "pH Scale Reference Data - Free Download (Excel/CSV/PDF)",
    "seo_description": "Download 33 pH scale reference entries for various substances. Get pH values, H⁺ concentration, and category. Free in Excel, CSV, and PDF formats.",
    "title": "pH Scale Reference Dataset & Chemical Properties",
    "description": "This dataset provides a comprehensive reference of 33 substances, listing their pH values, hydrogen ion concentration, acidity/alkalinity category, and nature.",
    "key_takeaways": [
      "Access a curated list of 33 common substances with their pH values.",
      "Explore hydrogen ion concentrations ([H⁺]) and categorize substances by acidity/alkalinity.",
      "Download essential chemistry reference data in multiple convenient formats.",
      "Understand the nature of various substances, from highly corrosive to neutral."
    ],
    "keywords": [
      "pH scale reference excel",
      "acid base pH data csv",
      "substance pH value download",
      "chemistry pH concentration",
      "alkaline acidic substances list",
      "free pH dataset pdf"
    ],
    "use_cases": [
      "Import the **CSV** file into your database or Python scripts for chemical research, data analysis, or building educational applications related to pH.",
      "Use the **Excel** file to filter, sort, and analyze pH values and concentrations for laboratory reporting, academic projects, or creating comparison charts.",
      "Print the **PDF** version for quick offline reference in a chemistry classroom, laboratory, or for study guides and educational presentations.",
      "Leverage this dataset to enrich educational content, develop quizzes, or demonstrate the pH spectrum of everyday substances to students."
    ]
  },
  "record_count": 33,
  "title": "pH Scale Reference Dataset & Chemical Properties"
}