This fact sheet answers the most frequently asked health questions (FAQs) about perchlorates. For more information, call the ATSDR Information Center at 1-800-232-4636. This fact sheet is one in a series of summaries about hazardous substances and their health effects.erchlorates are colorless salts that have no odor. There are five perchlorate salts that are manufactured in large amounts: magnesium perchlorate, potassium perchlorate, ammonium perchlorate, sodium perchlorate, and lithium perchlorate. Perchlorate salts are solids that dissolve easily in water.
Instructions. 1  1. First of all, start with few and easy sign languages. Introducing too many signs at one time will be a useless effort. 2  2. Introduce the signs to your children in such a way as âyou say the word.â It helps in associating the word with the sign language.
Video: Hat in Baby Sign Language. Signing: To sign hat tap on your hand using your dominant hand as if putting on a hat. Figure: Hat in Baby Sign Language. Usage: With most dress items and accessories we try to teach it contextually by including a variety of hats in our babyâs wardrobe. Flash Card: Click the link to view the Hat Baby Sign Language Flash Card. The flash cards are printable and available in both U.S. Letter and A4 sizes.