For the next few months, the Higman Training Newsletter will highlight the products carried aboard Higman Barges. The information below is general and is not meant to replace the Material Safety Data Sheet (MSDS). For detailed product safety and health information, be sure to read the most current MSDS for the product you are interested in.
Today's Chemical is:
What is it?
Sweet crude oil is a type of petroleum. Petroleum is considered "sweet" if it contains less than 0.5% sulfur, compared to a higher level of sulfur in sour crude oil. Sweet crude oil contains small amounts of hydrogen sulfide and carbon dioxide. High quality, low sulfur crude oil is commonly used for processing into gasoline and is in high demand, particularly in the industrialized nations. "Light sweet crude oil" is the most sought-after version of crude oil as it contains a disproportionately large amount of these fractions that are used to process gasoline (naphtha), kerosene, and high-quality diesel (gas oil).
The term "sweet" originated because the low level of sulfur provides the oil with a mildly sweet taste and pleasant smell. Nineteenth century prospectors would taste and smell small quantities of the oil to determine its quality.
West Texas Intermediate (WTI), also known as Texas light sweet, is a grade of crude oil used as a benchmark in oil pricing. This grade is described as light because of its relatively low density, and sweet because of its low sulfur content.
West Texas Intermediate is a light crude oil, with an API gravity of around 39.6 and specific gravity of about 0.827, which is lighter than Brent crude. It contains about 0.24% sulfur and is thus rated as a sweet crude oil (having less than 0.5% sulfur), sweeter than Brent which has 0.37% sulfur. WTI is refined mostly in the Midwest and Gulf Coast regions in the U.S., since it is high quality fuel and is produced within the country.
How is it shipped?
Sweet crude oil is typically shipped in bulk via tank bar
ge, rail tank car or ocean going tanker.
Amber to green to black liquid, depending on source. Sweet crude oil is volatile and flammable, and may cause flash fires. If ingested, aspiration may occur, causing lung damage or death.
What are the concerns?
Sweet Crude Oil contains Benzene. Be sure Benzene precautions are understood by all crew members and communications with dispatch and the loading dock are open to know if the potential levels.
Eye contact: Contact with eyes may cause mild to severe irritation including stinging, watering, redness, and swelling.
Immediately flush eyes with plenty of clean water for at least 15 minutes, while holding the eyelids open. Occasionally lift the eyelids to ensure thorough rinsing. Contact a physician if irritation persists or develops later.
Skin Contact: Mild skin irritation including redness and a burning sensation may follow acute contact. Prolonged contact may cause dermatitis, folliculitis, or oil acne.
Remove contaminated clothing. Wash with soap and water. Contact a physician if irritation persists or develops later. Thermal burns may require immediate medical attention, depending on severity and area burned.
Ingestion: The major threat of ingestion occurs from the aspiration (breathing) of liquid drops into the lungs, particularly from vomiting. Aspiration may result in chemical pneumonia (fluid in the lungs), severe Ingestion may cause gastrointestinal disturbances, including irritation, nausea, vomiting and diarrhea, and central nervous system (brain) effects similar to alcohol intoxication. In severe cases, tremors, convulsions, loss of consciousness, coma, respiratory arrest, and death may occur.
DO NOT INDUCE VOMITING. Do not give liquids. Obtain immediate medical attention. If vomiting occurs, lean victim forward to reduce the risk of aspiration.
Inhalation: May cause respiratory and nasal irritation. Central nervous system effects may include headache, dizziness, loss of balance and coordination, unconsciousness, coma, respiratory failure, and death.
Remove to fresh air. If victim is not breathing, provide artificial respiration, or provide additional oxygen if trained to do so. Seek medical attention immediately.
Fire Fighting Measures: This material is flammable and can be ignited by heat, sparks, flames, or other sources of ignition. Vapors may travel considerable distance to a source of ignition where they can ignite, flashback, or explode. May create vapor/air explosion hazard indoors, in confined spaces or outdoors.
Vapors are heavier than air and can accumulate in low areas. If container is not properly cooled, it can rupture.